CVE-2021-34714
Multiple Cisco Operating Systems Unidirectional Link Detection Denial of Service Vulnerability
HIGH
7.4
CVSS Score
Published: September 23, 2021 at 02:25 AM UTC
Updated: June 17, 2026 at 03:56 AM UTC
222 products affected across 1 vendorIOSIOS XeNx OS
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Severity
HIGH7.4
Exploit prediction
EPSS 0.4%
SSVC
No known exploit
Description
A vulnerability in the Unidirectional Link Detection (UDLD) feature of Cisco FXOS Software, Cisco IOS Software, Cisco IOS XE Software, Cisco IOS XR Software, and Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to cause an affected device to reload. This vulnerability is due to improper input validation of the UDLD packets. An attacker could exploit this vulnerability by sending specifically crafted UDLD packets to an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a denial of service (DoS) condition. Note: The UDLD feature is disabled by default, and the conditions to exploit this vulnerability are strict. An attacker must have full control of a directly connected device. On Cisco IOS XR devices, the impact is limited to the reload of the UDLD process.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v ≤ 3.2(3o)av ≤ 4.1(1a)av ≤ 7.0(3)i7(9)v ≤ 7.3(8)n1(1)v ≤ 8.4(3.115)
cisco-mds-9000 (environment) · cisco-mds-9100 (environment) · cisco-mds-9132t (environment) · cisco-mds-9134 (environment) · cisco-mds-9140 (environment) · cisco-mds-9148 (environment) · cisco-mds-9148s (environment) · cisco-mds-9148t (environment) · cisco-mds-9200 (environment) · cisco-mds-9216 (environment) · cisco-mds-9216a (environment) · cisco-mds-9216i (environment) · cisco-mds-9222i (environment) · cisco-mds-9250i (environment) · cisco-mds-9396s (environment) · cisco-mds-9396t (environment) · cisco-mds-9500 (environment) · cisco-mds-9506 (environment) · cisco-mds-9509 (environment) · cisco-mds-9513 (environment) · cisco-mds-9700 (environment) · cisco-mds-9706 (environment) · cisco-mds-9710 (environment) · cisco-mds-9718 (environment) · cisco-nexus-3000 (environment) · cisco-nexus-3016 (environment) · cisco-nexus-3016q (environment) · cisco-nexus-3048 (environment) · cisco-nexus-3064 (environment) · cisco-nexus-3064-32t (environment) · cisco-nexus-3064-t (environment) · cisco-nexus-3064-x (environment) · cisco-nexus-3064t (environment) · cisco-nexus-3064x (environment) · cisco-nexus-3100 (environment) · cisco-nexus-3100-v (environment) · cisco-nexus-3100-z (environment) · cisco-nexus-3100v (environment) · cisco-nexus-31108pc-v (environment) · cisco-nexus-31108pv-v (environment) · cisco-nexus-31108tc-v (environment) · cisco-nexus-31128pq (environment) · cisco-nexus-3132c-z (environment) · cisco-nexus-3132q (environment) · cisco-nexus-3132q-v (environment) · cisco-nexus-3132q-x (environment) · cisco-nexus-3132q-x-3132q-xl (environment) · cisco-nexus-3132q-xl (environment) · cisco-nexus-3164q (environment) · cisco-nexus-3172 (environment) · cisco-nexus-3172pq (environment) · cisco-nexus-3172pq-pq-xl (environment) · cisco-nexus-3172pq-xl (environment) · cisco-nexus-3172tq (environment) · cisco-nexus-3172tq-32t (environment) · cisco-nexus-3172tq-xl (environment) · cisco-nexus-3200 (environment) · cisco-nexus-3232c (environment) · cisco-nexus-3264c-e (environment) · cisco-nexus-3264q (environment) · cisco-nexus-3400 (environment) · cisco-nexus-3408-s (environment) · cisco-nexus-34180yc (environment) · cisco-nexus-34200yc-sm (environment) · cisco-nexus-3432d-s (environment) · cisco-nexus-3464c (environment) · cisco-nexus-3500 (environment) · cisco-nexus-3500-platform (environment) · cisco-nexus-3524 (environment) · cisco-nexus-3524-x (environment) · cisco-nexus-3524-x-xl (environment) · cisco-nexus-3524-xl (environment) · cisco-nexus-3548 (environment) · cisco-nexus-3548-x (environment) · cisco-nexus-3548-x-xl (environment) · cisco-nexus-3548-xl (environment) · cisco-nexus-3600 (environment) · cisco-nexus-36180yc-r (environment) · cisco-nexus-3636c-r (environment) · cisco-nexus-5000 (environment) · cisco-nexus-5010 (environment) · cisco-nexus-5020 (environment) · cisco-nexus-5500 (environment) · cisco-nexus-5548p (environment) · cisco-nexus-5548up (environment) · cisco-nexus-5596t (environment) · cisco-nexus-5596up (environment) · cisco-nexus-5600 (environment) · cisco-nexus-56128p (environment) · cisco-nexus-5624q (environment) · cisco-nexus-5648q (environment) · cisco-nexus-5672up (environment) · cisco-nexus-5672up-16g (environment) · cisco-nexus-5696q (environment) · cisco-nexus-6000 (environment) · cisco-nexus-6001 (environment) · cisco-nexus-6001p (environment) · cisco-nexus-6001t (environment) · cisco-nexus-6004 (environment) · cisco-nexus-6004x (environment) · cisco-nexus-7000 (environment) · cisco-nexus-7000-10-slot (environment) · cisco-nexus-7000-18-slot (environment) · cisco-nexus-7000-4-slot (environment) · cisco-nexus-7000-9-slot (environment) · cisco-nexus-7000-supervisor-1 (environment) · cisco-nexus-7000-supervisor-2 (environment) · cisco-nexus-7000-supervisor-2e (environment) · cisco-nexus-7004 (environment) · cisco-nexus-7009 (environment) · cisco-nexus-7010 (environment) · cisco-nexus-7018 (environment) · cisco-nexus-7700 (environment) · cisco-nexus-7700-10-slot (environment) · cisco-nexus-7700-18-slot (environment) · cisco-nexus-7700-2-slot (environment) · cisco-nexus-7700-6-slot (environment) · cisco-nexus-7700-supervisor-2e (environment) · cisco-nexus-7700-supervisor-3e (environment) · cisco-nexus-7702 (environment) · cisco-nexus-7706 (environment) · cisco-nexus-7710 (environment) · cisco-nexus-7718 (environment) · cisco-nexus-9000 (environment) · cisco-nexus-9000-in-aci-mode (environment) · cisco-nexus-9000-in-standalone (environment) · cisco-nexus-9000-in-standalone-nx-os-mode (environment) · cisco-nexus-9000v (environment) · cisco-nexus-9200 (environment) · cisco-nexus-92160yc-x (environment) · cisco-nexus-9221c (environment) · cisco-nexus-92300yc (environment) · cisco-nexus-92304qc (environment) · cisco-nexus-92348gc-x (environment) · cisco-nexus-9236c (environment) · cisco-nexus-9272q (environment) · cisco-nexus-9300 (environment) · cisco-nexus-93108tc-ex (environment) · cisco-nexus-93108tc-ex-24 (environment) · cisco-nexus-93108tc-fx (environment) · cisco-nexus-93108tc-fx-24 (environment) · cisco-nexus-93108tc-fx3p (environment) · cisco-nexus-93120tx (environment) · cisco-nexus-93128 (environment) · cisco-nexus-93128tx (environment) · cisco-nexus-9316d-gx (environment) · cisco-nexus-93180lc-ex (environment) · cisco-nexus-93180tc-ex (environment) · cisco-nexus-93180yc-ex (environment) · cisco-nexus-93180yc-ex-24 (environment) · cisco-nexus-93180yc-fx (environment) · cisco-nexus-93180yc-fx-24 (environment) · cisco-nexus-93180yc-fx3 (environment) · cisco-nexus-93180yc-fx3s (environment) · cisco-nexus-93216tc-fx2 (environment) · cisco-nexus-93240yc-fx2 (environment) · cisco-nexus-9332c (environment) · cisco-nexus-9332pq (environment) · cisco-nexus-93360yc-fx2 (environment) · cisco-nexus-9336c-fx2 (environment) · cisco-nexus-9336c-fx2-e (environment) · cisco-nexus-9336pq (environment) · cisco-nexus-9336pq-aci-spine (environment) · cisco-nexus-9348gc-fxp (environment) · cisco-nexus-93600cd-gx (environment) · cisco-nexus-9364c (environment) · cisco-nexus-9364c-gx (environment) · cisco-nexus-9372px (environment) · cisco-nexus-9372px-e (environment) · cisco-nexus-9372tx (environment) · cisco-nexus-9372tx-e (environment) · cisco-nexus-9396px (environment) · cisco-nexus-9396tx (environment) · cisco-nexus-9500 (environment) · cisco-nexus-9500-supervisor-a (environment) · cisco-nexus-9500-supervisor-b (environment) · cisco-nexus-9500r (environment) · cisco-nexus-9504 (environment) · cisco-nexus-9508 (environment) · cisco-nexus-9516 (environment) · cisco-ucs-6200 (environment) · cisco-ucs-6248-up-fabric-interconnect (environment) · cisco-ucs-6248up (environment) · cisco-ucs-6296-up-fabric-interconnect (environment) · cisco-ucs-6296up (environment) · cisco-ucs-6300 (environment) · cisco-ucs-6324 (environment) · cisco-ucs-6324-fabric-interconnect (environment) · cisco-ucs-6332 (environment) · cisco-ucs-6332-16up (environment) · cisco-ucs-6332-16up-fabric-interconnect (environment) · cisco-ucs-6332-fabric-interconnect (environment) · cisco-ucs-6400 (environment) · cisco-ucs-6454 (environment)
2.2 ≤ v < 2.2.2.1482.3 ≤ v < 2.3.1.2162.4 ≤ v < 2.4.1.2732.6 ≤ v < 2.6.1.2242.7 ≤ v < 2.7.1.1432.8 ≤ v < 2.8.1.1432.9 ≤ v < 2.9.1.135
Affected range stops below 2.2.2.148, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.3.1.216, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.4.1.273, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.6.1.224, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.7.1.143, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.8.1.143, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.9.1.135, so it looks safe — our inference, not a vendor statement
cisco-firepower-4100 (environment) · cisco-firepower-4110 (environment) · cisco-firepower-4112 (environment) · cisco-firepower-4115 (environment) · cisco-firepower-4120 (environment) · cisco-firepower-4125 (environment) · cisco-firepower-4140 (environment) · cisco-firepower-4145 (environment) · cisco-firepower-4150 (environment) · cisco-firepower-9300 (environment) · cisco-firepower-9300-sm-24 (environment) · cisco-firepower-9300-sm-36 (environment) · cisco-firepower-9300-sm-40 (environment) · cisco-firepower-9300-sm-44 (environment) · cisco-firepower-9300-sm-44-x-3 (environment) · cisco-firepower-9300-sm-48 (environment) · cisco-firepower-9300-sm-56 (environment) · cisco-firepower-9300-sm-56-x-3 (environment) · cisco-firepower-9300-with-1-sm-24-module (environment) · cisco-firepower-9300-with-1-sm-36-module (environment) · cisco-firepower-9300-with-1-sm-44-module (environment) · cisco-firepower-9300-with-3-sm-44-module (environment)
v ≤ 3.2(3o)av ≤ 4.1(1a)av ≤ 7.0(3)i7(9)v ≤ 7.3(8)n1(1)v ≤ 8.4(3.115)
cisco-mds-9000 (environment) · cisco-mds-9100 (environment) · cisco-mds-9132t (environment) · cisco-mds-9134 (environment) · cisco-mds-9140 (environment) · cisco-mds-9148 (environment) · cisco-mds-9148s (environment) · cisco-mds-9148t (environment) · cisco-mds-9200 (environment) · cisco-mds-9216 (environment) · cisco-mds-9216a (environment) · cisco-mds-9216i (environment) · cisco-mds-9222i (environment) · cisco-mds-9250i (environment) · cisco-mds-9396s (environment) · cisco-mds-9396t (environment) · cisco-mds-9500 (environment) · cisco-mds-9506 (environment) · cisco-mds-9509 (environment) · cisco-mds-9513 (environment) · cisco-mds-9700 (environment) · cisco-mds-9706 (environment) · cisco-mds-9710 (environment) · cisco-mds-9718 (environment) · cisco-nexus-3000 (environment) · cisco-nexus-3016 (environment) · cisco-nexus-3016q (environment) · cisco-nexus-3048 (environment) · cisco-nexus-3064 (environment) · cisco-nexus-3064-32t (environment) · cisco-nexus-3064-t (environment) · cisco-nexus-3064-x (environment) · cisco-nexus-3064t (environment) · cisco-nexus-3064x (environment) · cisco-nexus-3100 (environment) · cisco-nexus-3100-v (environment) · cisco-nexus-3100-z (environment) · cisco-nexus-3100v (environment) · cisco-nexus-31108pc-v (environment) · cisco-nexus-31108pv-v (environment) · cisco-nexus-31108tc-v (environment) · cisco-nexus-31128pq (environment) · cisco-nexus-3132c-z (environment) · cisco-nexus-3132q (environment) · cisco-nexus-3132q-v (environment) · cisco-nexus-3132q-x (environment) · cisco-nexus-3132q-x-3132q-xl (environment) · cisco-nexus-3132q-xl (environment) · cisco-nexus-3164q (environment) · cisco-nexus-3172 (environment) · cisco-nexus-3172pq (environment) · cisco-nexus-3172pq-pq-xl (environment) · cisco-nexus-3172pq-xl (environment) · cisco-nexus-3172tq (environment) · cisco-nexus-3172tq-32t (environment) · cisco-nexus-3172tq-xl (environment) · cisco-nexus-3200 (environment) · cisco-nexus-3232c (environment) · cisco-nexus-3264c-e (environment) · cisco-nexus-3264q (environment) · cisco-nexus-3400 (environment) · cisco-nexus-3408-s (environment) · cisco-nexus-34180yc (environment) · cisco-nexus-34200yc-sm (environment) · cisco-nexus-3432d-s (environment) · cisco-nexus-3464c (environment) · cisco-nexus-3500 (environment) · cisco-nexus-3500-platform (environment) · cisco-nexus-3524 (environment) · cisco-nexus-3524-x (environment) · cisco-nexus-3524-x-xl (environment) · cisco-nexus-3524-xl (environment) · cisco-nexus-3548 (environment) · cisco-nexus-3548-x (environment) · cisco-nexus-3548-x-xl (environment) · cisco-nexus-3548-xl (environment) · cisco-nexus-3600 (environment) · cisco-nexus-36180yc-r (environment) · cisco-nexus-3636c-r (environment) · cisco-nexus-5000 (environment) · cisco-nexus-5010 (environment) · cisco-nexus-5020 (environment) · cisco-nexus-5500 (environment) · cisco-nexus-5548p (environment) · cisco-nexus-5548up (environment) · cisco-nexus-5596t (environment) · cisco-nexus-5596up (environment) · cisco-nexus-5600 (environment) · cisco-nexus-56128p (environment) · cisco-nexus-5624q (environment) · cisco-nexus-5648q (environment) · cisco-nexus-5672up (environment) · cisco-nexus-5672up-16g (environment) · cisco-nexus-5696q (environment) · cisco-nexus-6000 (environment) · cisco-nexus-6001 (environment) · cisco-nexus-6001p (environment) · cisco-nexus-6001t (environment) · cisco-nexus-6004 (environment) · cisco-nexus-6004x (environment) · cisco-nexus-7000 (environment) · cisco-nexus-7000-10-slot (environment) · cisco-nexus-7000-18-slot (environment) · cisco-nexus-7000-4-slot (environment) · cisco-nexus-7000-9-slot (environment) · cisco-nexus-7000-supervisor-1 (environment) · cisco-nexus-7000-supervisor-2 (environment) · cisco-nexus-7000-supervisor-2e (environment) · cisco-nexus-7004 (environment) · cisco-nexus-7009 (environment) · cisco-nexus-7010 (environment) · cisco-nexus-7018 (environment) · cisco-nexus-7700 (environment) · cisco-nexus-7700-10-slot (environment) · cisco-nexus-7700-18-slot (environment) · cisco-nexus-7700-2-slot (environment) · cisco-nexus-7700-6-slot (environment) · cisco-nexus-7700-supervisor-2e (environment) · cisco-nexus-7700-supervisor-3e (environment) · cisco-nexus-7702 (environment) · cisco-nexus-7706 (environment) · cisco-nexus-7710 (environment) · cisco-nexus-7718 (environment) · cisco-nexus-9000 (environment) · cisco-nexus-9000-in-aci-mode (environment) · cisco-nexus-9000-in-standalone (environment) · cisco-nexus-9000-in-standalone-nx-os-mode (environment) · cisco-nexus-9000v (environment) · cisco-nexus-9200 (environment) · cisco-nexus-92160yc-x (environment) · cisco-nexus-9221c (environment) · cisco-nexus-92300yc (environment) · cisco-nexus-92304qc (environment) · cisco-nexus-92348gc-x (environment) · cisco-nexus-9236c (environment) · cisco-nexus-9272q (environment) · cisco-nexus-9300 (environment) · cisco-nexus-93108tc-ex (environment) · cisco-nexus-93108tc-ex-24 (environment) · cisco-nexus-93108tc-fx (environment) · cisco-nexus-93108tc-fx-24 (environment) · cisco-nexus-93108tc-fx3p (environment) · cisco-nexus-93120tx (environment) · cisco-nexus-93128 (environment) · cisco-nexus-93128tx (environment) · cisco-nexus-9316d-gx (environment) · cisco-nexus-93180lc-ex (environment) · cisco-nexus-93180tc-ex (environment) · cisco-nexus-93180yc-ex (environment) · cisco-nexus-93180yc-ex-24 (environment) · cisco-nexus-93180yc-fx (environment) · cisco-nexus-93180yc-fx-24 (environment) · cisco-nexus-93180yc-fx3 (environment) · cisco-nexus-93180yc-fx3s (environment) · cisco-nexus-93216tc-fx2 (environment) · cisco-nexus-93240yc-fx2 (environment) · cisco-nexus-9332c (environment) · cisco-nexus-9332pq (environment) · cisco-nexus-93360yc-fx2 (environment) · cisco-nexus-9336c-fx2 (environment) · cisco-nexus-9336c-fx2-e (environment) · cisco-nexus-9336pq (environment) · cisco-nexus-9336pq-aci-spine (environment) · cisco-nexus-9348gc-fxp (environment) · cisco-nexus-93600cd-gx (environment) · cisco-nexus-9364c (environment) · cisco-nexus-9364c-gx (environment) · cisco-nexus-9372px (environment) · cisco-nexus-9372px-e (environment) · cisco-nexus-9372tx (environment) · cisco-nexus-9372tx-e (environment) · cisco-nexus-9396px (environment) · cisco-nexus-9396tx (environment) · cisco-nexus-9500 (environment) · cisco-nexus-9500-supervisor-a (environment) · cisco-nexus-9500-supervisor-b (environment) · cisco-nexus-9500r (environment) · cisco-nexus-9504 (environment) · cisco-nexus-9508 (environment) · cisco-nexus-9516 (environment) · cisco-ucs-6200 (environment) · cisco-ucs-6248-up-fabric-interconnect (environment) · cisco-ucs-6248up (environment) · cisco-ucs-6296-up-fabric-interconnect (environment) · cisco-ucs-6296up (environment) · cisco-ucs-6300 (environment) · cisco-ucs-6324 (environment) · cisco-ucs-6324-fabric-interconnect (environment) · cisco-ucs-6332 (environment) · cisco-ucs-6332-16up (environment) · cisco-ucs-6332-16up-fabric-interconnect (environment) · cisco-ucs-6332-fabric-interconnect (environment) · cisco-ucs-6400 (environment) · cisco-ucs-6454 (environment)
v ≤ 3.2(3o)av ≤ 4.1(1a)av ≤ 7.0(3)i7(9)v ≤ 7.3(8)n1(1)v ≤ 8.4(3.115)
cisco-mds-9000 (environment) · cisco-mds-9100 (environment) · cisco-mds-9132t (environment) · cisco-mds-9134 (environment) · cisco-mds-9140 (environment) · cisco-mds-9148 (environment) · cisco-mds-9148s (environment) · cisco-mds-9148t (environment) · cisco-mds-9200 (environment) · cisco-mds-9216 (environment) · cisco-mds-9216a (environment) · cisco-mds-9216i (environment) · cisco-mds-9222i (environment) · cisco-mds-9250i (environment) · cisco-mds-9396s (environment) · cisco-mds-9396t (environment) · cisco-mds-9500 (environment) · cisco-mds-9506 (environment) · cisco-mds-9509 (environment) · cisco-mds-9513 (environment) · cisco-mds-9700 (environment) · cisco-mds-9706 (environment) · cisco-mds-9710 (environment) · cisco-mds-9718 (environment) · cisco-nexus-3000 (environment) · cisco-nexus-3016 (environment) · cisco-nexus-3016q (environment) · cisco-nexus-3048 (environment) · cisco-nexus-3064 (environment) · cisco-nexus-3064-32t (environment) · cisco-nexus-3064-t (environment) · cisco-nexus-3064-x (environment) · cisco-nexus-3064t (environment) · cisco-nexus-3064x (environment) · cisco-nexus-3100 (environment) · cisco-nexus-3100-v (environment) · cisco-nexus-3100-z (environment) · cisco-nexus-3100v (environment) · cisco-nexus-31108pc-v (environment) · cisco-nexus-31108pv-v (environment) · cisco-nexus-31108tc-v (environment) · cisco-nexus-31128pq (environment) · cisco-nexus-3132c-z (environment) · cisco-nexus-3132q (environment) · cisco-nexus-3132q-v (environment) · cisco-nexus-3132q-x (environment) · cisco-nexus-3132q-x-3132q-xl (environment) · cisco-nexus-3132q-xl (environment) · cisco-nexus-3164q (environment) · cisco-nexus-3172 (environment) · cisco-nexus-3172pq (environment) · cisco-nexus-3172pq-pq-xl (environment) · cisco-nexus-3172pq-xl (environment) · cisco-nexus-3172tq (environment) · cisco-nexus-3172tq-32t (environment) · cisco-nexus-3172tq-xl (environment) · cisco-nexus-3200 (environment) · cisco-nexus-3232c (environment) · cisco-nexus-3264c-e (environment) · cisco-nexus-3264q (environment) · cisco-nexus-3400 (environment) · cisco-nexus-3408-s (environment) · cisco-nexus-34180yc (environment) · cisco-nexus-34200yc-sm (environment) · cisco-nexus-3432d-s (environment) · cisco-nexus-3464c (environment) · cisco-nexus-3500 (environment) · cisco-nexus-3500-platform (environment) · cisco-nexus-3524 (environment) · cisco-nexus-3524-x (environment) · cisco-nexus-3524-x-xl (environment) · cisco-nexus-3524-xl (environment) · cisco-nexus-3548 (environment) · cisco-nexus-3548-x (environment) · cisco-nexus-3548-x-xl (environment) · cisco-nexus-3548-xl (environment) · cisco-nexus-3600 (environment) · cisco-nexus-36180yc-r (environment) · cisco-nexus-3636c-r (environment) · cisco-nexus-5000 (environment) · cisco-nexus-5010 (environment) · cisco-nexus-5020 (environment) · cisco-nexus-5500 (environment) · cisco-nexus-5548p (environment) · cisco-nexus-5548up (environment) · cisco-nexus-5596t (environment) · cisco-nexus-5596up (environment) · cisco-nexus-5600 (environment) · cisco-nexus-56128p (environment) · cisco-nexus-5624q (environment) · cisco-nexus-5648q (environment) · cisco-nexus-5672up (environment) · cisco-nexus-5672up-16g (environment) · cisco-nexus-5696q (environment) · cisco-nexus-6000 (environment) · cisco-nexus-6001 (environment) · cisco-nexus-6001p (environment) · cisco-nexus-6001t (environment) · cisco-nexus-6004 (environment) · cisco-nexus-6004x (environment) · cisco-nexus-7000 (environment) · cisco-nexus-7000-10-slot (environment) · cisco-nexus-7000-18-slot (environment) · cisco-nexus-7000-4-slot (environment) · cisco-nexus-7000-9-slot (environment) · cisco-nexus-7000-supervisor-1 (environment) · cisco-nexus-7000-supervisor-2 (environment) · cisco-nexus-7000-supervisor-2e (environment) · cisco-nexus-7004 (environment) · cisco-nexus-7009 (environment) · cisco-nexus-7010 (environment) · cisco-nexus-7018 (environment) · cisco-nexus-7700 (environment) · cisco-nexus-7700-10-slot (environment) · cisco-nexus-7700-18-slot (environment) · cisco-nexus-7700-2-slot (environment) · cisco-nexus-7700-6-slot (environment) · cisco-nexus-7700-supervisor-2e (environment) · cisco-nexus-7700-supervisor-3e (environment) · cisco-nexus-7702 (environment) · cisco-nexus-7706 (environment) · cisco-nexus-7710 (environment) · cisco-nexus-7718 (environment) · cisco-nexus-9000 (environment) · cisco-nexus-9000-in-aci-mode (environment) · cisco-nexus-9000-in-standalone (environment) · cisco-nexus-9000-in-standalone-nx-os-mode (environment) · cisco-nexus-9000v (environment) · cisco-nexus-9200 (environment) · cisco-nexus-92160yc-x (environment) · cisco-nexus-9221c (environment) · cisco-nexus-92300yc (environment) · cisco-nexus-92304qc (environment) · cisco-nexus-92348gc-x (environment) · cisco-nexus-9236c (environment) · cisco-nexus-9272q (environment) · cisco-nexus-9300 (environment) · cisco-nexus-93108tc-ex (environment) · cisco-nexus-93108tc-ex-24 (environment) · cisco-nexus-93108tc-fx (environment) · cisco-nexus-93108tc-fx-24 (environment) · cisco-nexus-93108tc-fx3p (environment) · cisco-nexus-93120tx (environment) · cisco-nexus-93128 (environment) · cisco-nexus-93128tx (environment) · cisco-nexus-9316d-gx (environment) · cisco-nexus-93180lc-ex (environment) · cisco-nexus-93180tc-ex (environment) · cisco-nexus-93180yc-ex (environment) · cisco-nexus-93180yc-ex-24 (environment) · cisco-nexus-93180yc-fx (environment) · cisco-nexus-93180yc-fx-24 (environment) · cisco-nexus-93180yc-fx3 (environment) · cisco-nexus-93180yc-fx3s (environment) · cisco-nexus-93216tc-fx2 (environment) · cisco-nexus-93240yc-fx2 (environment) · cisco-nexus-9332c (environment) · cisco-nexus-9332pq (environment) · cisco-nexus-93360yc-fx2 (environment) · cisco-nexus-9336c-fx2 (environment) · cisco-nexus-9336c-fx2-e (environment) · cisco-nexus-9336pq (environment) · cisco-nexus-9336pq-aci-spine (environment) · cisco-nexus-9348gc-fxp (environment) · cisco-nexus-93600cd-gx (environment) · cisco-nexus-9364c (environment) · cisco-nexus-9364c-gx (environment) · cisco-nexus-9372px (environment) · cisco-nexus-9372px-e (environment) · cisco-nexus-9372tx (environment) · cisco-nexus-9372tx-e (environment) · cisco-nexus-9396px (environment) · cisco-nexus-9396tx (environment) · cisco-nexus-9500 (environment) · cisco-nexus-9500-supervisor-a (environment) · cisco-nexus-9500-supervisor-b (environment) · cisco-nexus-9500r (environment) · cisco-nexus-9504 (environment) · cisco-nexus-9508 (environment) · cisco-nexus-9516 (environment) · cisco-ucs-6200 (environment) · cisco-ucs-6248-up-fabric-interconnect (environment) · cisco-ucs-6248up (environment) · cisco-ucs-6296-up-fabric-interconnect (environment) · cisco-ucs-6296up (environment) · cisco-ucs-6300 (environment) · cisco-ucs-6324 (environment) · cisco-ucs-6324-fabric-interconnect (environment) · cisco-ucs-6332 (environment) · cisco-ucs-6332-16up (environment) · cisco-ucs-6332-16up-fabric-interconnect (environment) · cisco-ucs-6332-fabric-interconnect (environment) · cisco-ucs-6400 (environment) · cisco-ucs-6454 (environment)
v ≤ 3.2(3o)av ≤ 4.1(1a)av ≤ 7.0(3)i7(9)v ≤ 7.3(8)n1(1)v ≤ 8.4(3.115)
cisco-mds-9000 (environment) · cisco-mds-9100 (environment) · cisco-mds-9132t (environment) · cisco-mds-9134 (environment) · cisco-mds-9140 (environment) · cisco-mds-9148 (environment) · cisco-mds-9148s (environment) · cisco-mds-9148t (environment) · cisco-mds-9200 (environment) · cisco-mds-9216 (environment) · cisco-mds-9216a (environment) · cisco-mds-9216i (environment) · cisco-mds-9222i (environment) · cisco-mds-9250i (environment) · cisco-mds-9396s (environment) · cisco-mds-9396t (environment) · cisco-mds-9500 (environment) · cisco-mds-9506 (environment) · cisco-mds-9509 (environment) · cisco-mds-9513 (environment) · cisco-mds-9700 (environment) · cisco-mds-9706 (environment) · cisco-mds-9710 (environment) · cisco-mds-9718 (environment) · cisco-nexus-3000 (environment) · cisco-nexus-3016 (environment) · cisco-nexus-3016q (environment) · cisco-nexus-3048 (environment) · cisco-nexus-3064 (environment) · cisco-nexus-3064-32t (environment) · cisco-nexus-3064-t (environment) · cisco-nexus-3064-x (environment) · cisco-nexus-3064t (environment) · cisco-nexus-3064x (environment) · cisco-nexus-3100 (environment) · cisco-nexus-3100-v (environment) · cisco-nexus-3100-z (environment) · cisco-nexus-3100v (environment) · cisco-nexus-31108pc-v (environment) · cisco-nexus-31108pv-v (environment) · cisco-nexus-31108tc-v (environment) · cisco-nexus-31128pq (environment) · cisco-nexus-3132c-z (environment) · cisco-nexus-3132q (environment) · cisco-nexus-3132q-v (environment) · cisco-nexus-3132q-x (environment) · cisco-nexus-3132q-x-3132q-xl (environment) · cisco-nexus-3132q-xl (environment) · cisco-nexus-3164q (environment) · cisco-nexus-3172 (environment) · cisco-nexus-3172pq (environment) · cisco-nexus-3172pq-pq-xl (environment) · cisco-nexus-3172pq-xl (environment) · cisco-nexus-3172tq (environment) · cisco-nexus-3172tq-32t (environment) · cisco-nexus-3172tq-xl (environment) · cisco-nexus-3200 (environment) · cisco-nexus-3232c (environment) · cisco-nexus-3264c-e (environment) · cisco-nexus-3264q (environment) · cisco-nexus-3400 (environment) · cisco-nexus-3408-s (environment) · cisco-nexus-34180yc (environment) · cisco-nexus-34200yc-sm (environment) · cisco-nexus-3432d-s (environment) · cisco-nexus-3464c (environment) · cisco-nexus-3500 (environment) · cisco-nexus-3500-platform (environment) · cisco-nexus-3524 (environment) · cisco-nexus-3524-x (environment) · cisco-nexus-3524-x-xl (environment) · cisco-nexus-3524-xl (environment) · cisco-nexus-3548 (environment) · cisco-nexus-3548-x (environment) · cisco-nexus-3548-x-xl (environment) · cisco-nexus-3548-xl (environment) · cisco-nexus-3600 (environment) · cisco-nexus-36180yc-r (environment) · cisco-nexus-3636c-r (environment) · cisco-nexus-5000 (environment) · cisco-nexus-5010 (environment) · cisco-nexus-5020 (environment) · cisco-nexus-5500 (environment) · cisco-nexus-5548p (environment) · cisco-nexus-5548up (environment) · cisco-nexus-5596t (environment) · cisco-nexus-5596up (environment) · cisco-nexus-5600 (environment) · cisco-nexus-56128p (environment) · cisco-nexus-5624q (environment) · cisco-nexus-5648q (environment) · cisco-nexus-5672up (environment) · cisco-nexus-5672up-16g (environment) · cisco-nexus-5696q (environment) · cisco-nexus-6000 (environment) · cisco-nexus-6001 (environment) · cisco-nexus-6001p (environment) · cisco-nexus-6001t (environment) · cisco-nexus-6004 (environment) · cisco-nexus-6004x (environment) · cisco-nexus-7000 (environment) · cisco-nexus-7000-10-slot (environment) · cisco-nexus-7000-18-slot (environment) · cisco-nexus-7000-4-slot (environment) · cisco-nexus-7000-9-slot (environment) · cisco-nexus-7000-supervisor-1 (environment) · cisco-nexus-7000-supervisor-2 (environment) · cisco-nexus-7000-supervisor-2e (environment) · cisco-nexus-7004 (environment) · cisco-nexus-7009 (environment) · cisco-nexus-7010 (environment) · cisco-nexus-7018 (environment) · cisco-nexus-7700 (environment) · cisco-nexus-7700-10-slot (environment) · cisco-nexus-7700-18-slot (environment) · cisco-nexus-7700-2-slot (environment) · cisco-nexus-7700-6-slot (environment) · cisco-nexus-7700-supervisor-2e (environment) · cisco-nexus-7700-supervisor-3e (environment) · cisco-nexus-7702 (environment) · cisco-nexus-7706 (environment) · cisco-nexus-7710 (environment) · cisco-nexus-7718 (environment) · cisco-nexus-9000 (environment) · cisco-nexus-9000-in-aci-mode (environment) · cisco-nexus-9000-in-standalone (environment) · cisco-nexus-9000-in-standalone-nx-os-mode (environment) · cisco-nexus-9000v (environment) · cisco-nexus-9200 (environment) · cisco-nexus-92160yc-x (environment) · cisco-nexus-9221c (environment) · cisco-nexus-92300yc (environment) · cisco-nexus-92304qc (environment) · cisco-nexus-92348gc-x (environment) · cisco-nexus-9236c (environment) · cisco-nexus-9272q (environment) · cisco-nexus-9300 (environment) · cisco-nexus-93108tc-ex (environment) · cisco-nexus-93108tc-ex-24 (environment) · cisco-nexus-93108tc-fx (environment) · cisco-nexus-93108tc-fx-24 (environment) · cisco-nexus-93108tc-fx3p (environment) · cisco-nexus-93120tx (environment) · cisco-nexus-93128 (environment) · cisco-nexus-93128tx (environment) · cisco-nexus-9316d-gx (environment) · cisco-nexus-93180lc-ex (environment) · cisco-nexus-93180tc-ex (environment) · cisco-nexus-93180yc-ex (environment) · cisco-nexus-93180yc-ex-24 (environment) · cisco-nexus-93180yc-fx (environment) · cisco-nexus-93180yc-fx-24 (environment) · cisco-nexus-93180yc-fx3 (environment) · cisco-nexus-93180yc-fx3s (environment) · cisco-nexus-93216tc-fx2 (environment) · cisco-nexus-93240yc-fx2 (environment) · cisco-nexus-9332c (environment) · cisco-nexus-9332pq (environment) · cisco-nexus-93360yc-fx2 (environment) · cisco-nexus-9336c-fx2 (environment) · cisco-nexus-9336c-fx2-e (environment) · cisco-nexus-9336pq (environment) · cisco-nexus-9336pq-aci-spine (environment) · cisco-nexus-9348gc-fxp (environment) · cisco-nexus-93600cd-gx (environment) · cisco-nexus-9364c (environment) · cisco-nexus-9364c-gx (environment) · cisco-nexus-9372px (environment) · cisco-nexus-9372px-e (environment) · cisco-nexus-9372tx (environment) · cisco-nexus-9372tx-e (environment) · cisco-nexus-9396px (environment) · cisco-nexus-9396tx (environment) · cisco-nexus-9500 (environment) · cisco-nexus-9500-supervisor-a (environment) · cisco-nexus-9500-supervisor-b (environment) · cisco-nexus-9500r (environment) · cisco-nexus-9504 (environment) · cisco-nexus-9508 (environment) · cisco-nexus-9516 (environment) · cisco-ucs-6200 (environment) · cisco-ucs-6248-up-fabric-interconnect (environment) · cisco-ucs-6248up (environment) · cisco-ucs-6296-up-fabric-interconnect (environment) · cisco-ucs-6296up (environment) · cisco-ucs-6300 (environment) · cisco-ucs-6324 (environment) · cisco-ucs-6324-fabric-interconnect (environment) · cisco-ucs-6332 (environment) · cisco-ucs-6332-16up (environment) · cisco-ucs-6332-16up-fabric-interconnect (environment) · cisco-ucs-6332-fabric-interconnect (environment) · cisco-ucs-6400 (environment) · cisco-ucs-6454 (environment)
v ≤ 3.2(3o)av ≤ 7.0(3)i7(9)v ≤ 7.3(8)n1(1)v ≤ 8.4(3.115)
cisco-mds-9000 (environment) · cisco-mds-9100 (environment) · cisco-mds-9132t (environment) · cisco-mds-9134 (environment) · cisco-mds-9140 (environment) · cisco-mds-9148 (environment) · cisco-mds-9148s (environment) · cisco-mds-9148t (environment) · cisco-mds-9200 (environment) · cisco-mds-9216 (environment) · cisco-mds-9216a (environment) · cisco-mds-9216i (environment) · cisco-mds-9222i (environment) · cisco-mds-9250i (environment) · cisco-mds-9396s (environment) · cisco-mds-9396t (environment) · cisco-mds-9500 (environment) · cisco-mds-9506 (environment) · cisco-mds-9509 (environment) · cisco-mds-9513 (environment) · cisco-mds-9700 (environment) · cisco-mds-9706 (environment) · cisco-mds-9710 (environment) · cisco-mds-9718 (environment) · cisco-nexus-3000 (environment) · cisco-nexus-3016 (environment) · cisco-nexus-3016q (environment) · cisco-nexus-3048 (environment) · cisco-nexus-3064 (environment) · cisco-nexus-3064-32t (environment) · cisco-nexus-3064-t (environment) · cisco-nexus-3064-x (environment) · cisco-nexus-3064t (environment) · cisco-nexus-3064x (environment) · cisco-nexus-3100 (environment) · cisco-nexus-3100-v (environment) · cisco-nexus-3100-z (environment) · cisco-nexus-3100v (environment) · cisco-nexus-31108pc-v (environment) · cisco-nexus-31108pv-v (environment) · cisco-nexus-31108tc-v (environment) · cisco-nexus-31128pq (environment) · cisco-nexus-3132c-z (environment) · cisco-nexus-3132q (environment) · cisco-nexus-3132q-v (environment) · cisco-nexus-3132q-x (environment) · cisco-nexus-3132q-x-3132q-xl (environment) · cisco-nexus-3132q-xl (environment) · cisco-nexus-3164q (environment) · cisco-nexus-3172 (environment) · cisco-nexus-3172pq (environment) · cisco-nexus-3172pq-pq-xl (environment) · cisco-nexus-3172pq-xl (environment) · cisco-nexus-3172tq (environment) · cisco-nexus-3172tq-32t (environment) · cisco-nexus-3172tq-xl (environment) · cisco-nexus-3200 (environment) · cisco-nexus-3232c (environment) · cisco-nexus-3264c-e (environment) · cisco-nexus-3264q (environment) · cisco-nexus-3400 (environment) · cisco-nexus-3408-s (environment) · cisco-nexus-34180yc (environment) · cisco-nexus-34200yc-sm (environment) · cisco-nexus-3432d-s (environment) · cisco-nexus-3464c (environment) · cisco-nexus-3500 (environment) · cisco-nexus-3500-platform (environment) · cisco-nexus-3524 (environment) · cisco-nexus-3524-x (environment) · cisco-nexus-3524-x-xl (environment) · cisco-nexus-3524-xl (environment) · cisco-nexus-3548 (environment) · cisco-nexus-3548-x (environment) · cisco-nexus-3548-x-xl (environment) · cisco-nexus-3548-xl (environment) · cisco-nexus-3600 (environment) · cisco-nexus-36180yc-r (environment) · cisco-nexus-3636c-r (environment) · cisco-nexus-5000 (environment) · cisco-nexus-5010 (environment) · cisco-nexus-5020 (environment) · cisco-nexus-5500 (environment) · cisco-nexus-5548p (environment) · cisco-nexus-5548up (environment) · cisco-nexus-5596t (environment) · cisco-nexus-5596up (environment) · cisco-nexus-5600 (environment) · cisco-nexus-56128p (environment) · cisco-nexus-5624q (environment) · cisco-nexus-5648q (environment) · cisco-nexus-5672up (environment) · cisco-nexus-5672up-16g (environment) · cisco-nexus-5696q (environment) · cisco-nexus-6000 (environment) · cisco-nexus-6001 (environment) · cisco-nexus-6001p (environment) · cisco-nexus-6001t (environment) · cisco-nexus-6004 (environment) · cisco-nexus-6004x (environment) · cisco-nexus-7000 (environment) · cisco-nexus-7000-10-slot (environment) · cisco-nexus-7000-18-slot (environment) · cisco-nexus-7000-4-slot (environment) · cisco-nexus-7000-9-slot (environment) · cisco-nexus-7000-supervisor-1 (environment) · cisco-nexus-7000-supervisor-2 (environment) · cisco-nexus-7000-supervisor-2e (environment) · cisco-nexus-7004 (environment) · cisco-nexus-7009 (environment) · cisco-nexus-7010 (environment) · cisco-nexus-7018 (environment) · cisco-nexus-7700 (environment) · cisco-nexus-7700-10-slot (environment) · cisco-nexus-7700-18-slot (environment) · cisco-nexus-7700-2-slot (environment) · cisco-nexus-7700-6-slot (environment) · cisco-nexus-7700-supervisor-2e (environment) · cisco-nexus-7700-supervisor-3e (environment) · cisco-nexus-7702 (environment) · cisco-nexus-7706 (environment) · cisco-nexus-7710 (environment) · cisco-nexus-7718 (environment) · cisco-nexus-9000 (environment) · cisco-nexus-9000-in-aci-mode (environment) · cisco-nexus-9000-in-standalone (environment) · cisco-nexus-9000-in-standalone-nx-os-mode (environment) · cisco-nexus-9000v (environment) · cisco-nexus-9200 (environment) · cisco-nexus-92160yc-x (environment) · cisco-nexus-9221c (environment) · cisco-nexus-92300yc (environment) · cisco-nexus-92304qc (environment) · cisco-nexus-92348gc-x (environment) · cisco-nexus-9236c (environment) · cisco-nexus-9272q (environment) · cisco-nexus-9300 (environment) · cisco-nexus-93108tc-ex (environment) · cisco-nexus-93108tc-ex-24 (environment) · cisco-nexus-93108tc-fx (environment) · cisco-nexus-93108tc-fx-24 (environment) · cisco-nexus-93108tc-fx3p (environment) · cisco-nexus-93120tx (environment) · cisco-nexus-93128 (environment) · cisco-nexus-93128tx (environment) · cisco-nexus-9316d-gx (environment) · cisco-nexus-93180lc-ex (environment) · cisco-nexus-93180tc-ex (environment) · cisco-nexus-93180yc-ex (environment) · cisco-nexus-93180yc-ex-24 (environment) · cisco-nexus-93180yc-fx (environment) · cisco-nexus-93180yc-fx-24 (environment) · cisco-nexus-93180yc-fx3 (environment) · cisco-nexus-93180yc-fx3s (environment) · cisco-nexus-93216tc-fx2 (environment) · cisco-nexus-93240yc-fx2 (environment) · cisco-nexus-9332c (environment) · cisco-nexus-9332pq (environment) · cisco-nexus-93360yc-fx2 (environment) · cisco-nexus-9336c-fx2 (environment) · cisco-nexus-9336c-fx2-e (environment) · cisco-nexus-9336pq (environment) · cisco-nexus-9336pq-aci-spine (environment) · cisco-nexus-9348gc-fxp (environment) · cisco-nexus-93600cd-gx (environment) · cisco-nexus-9364c (environment) · cisco-nexus-9364c-gx (environment) · cisco-nexus-9372px (environment) · cisco-nexus-9372px-e (environment) · cisco-nexus-9372tx (environment) · cisco-nexus-9372tx-e (environment) · cisco-nexus-9396px (environment) · cisco-nexus-9396tx (environment) · cisco-nexus-9500 (environment) · cisco-nexus-9500-supervisor-a (environment) · cisco-nexus-9500-supervisor-b (environment) · cisco-nexus-9500r (environment) · cisco-nexus-9504 (environment) · cisco-nexus-9508 (environment) · cisco-nexus-9516 (environment) · cisco-ucs-6200 (environment) · cisco-ucs-6248-up-fabric-interconnect (environment) · cisco-ucs-6248up (environment) · cisco-ucs-6296-up-fabric-interconnect (environment) · cisco-ucs-6296up (environment) · cisco-ucs-6300 (environment) · cisco-ucs-6324 (environment) · cisco-ucs-6324-fabric-interconnect (environment) · cisco-ucs-6332 (environment) · cisco-ucs-6332-16up (environment) · cisco-ucs-6332-16up-fabric-interconnect (environment) · cisco-ucs-6332-fabric-interconnect (environment) · cisco-ucs-6400 (environment) · cisco-ucs-6454 (environment)
Firepower 4100· Ciscodevice
80%All versions
Firepower 4110· Ciscodevice
80%All versions
Firepower 4112· Ciscodevice
80%All versions
Firepower 4115· Ciscodevice
80%All versions
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (1)
Vendor Advisoryx_refsource_CISCO
Source: [email protected]
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-nxos-xr-udld-dos-W5hGHgtQSSVC — Action Prioritization
SSVCNo known exploitNot automatablePartial impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
7.4HIGHcisco
- Attack Vector
- ADJACENT_NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- CHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-20
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