CVE-2019-1963

Cisco FXOS and NX-OS Software Authenticated Simple Network Management Protocol Denial of Service Vulnerability

HIGH

7.7

CVSS Score

Published: August 28, 2019 at 06:50 PM UTC

Updated: June 17, 2026 at 02:29 AM UTC

129 products affected across 1 vendorNx OSFxosNexus 9508

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Severity

HIGH7.7

Exploit prediction

EPSS 2%

SSVC

No known exploit

Description

A vulnerability in the Simple Network Management Protocol (SNMP) input packet processor of Cisco FXOS Software and Cisco NX-OS Software could allow an authenticated, remote attacker to cause the SNMP application on an affected device to restart unexpectedly. The vulnerability is due to improper validation of Abstract Syntax Notation One (ASN.1)-encoded variables in SNMP packets. An attacker could exploit this vulnerability by sending a crafted SNMP packet to the SNMP daemon on the affected device. A successful exploit could allow the attacker to cause the SNMP application to restart multiple times, leading to a system-level restart and a denial of service (DoS) condition.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Fxos · Cisco

95%

v < 2.2.2.912.3 ≤ v < 2.3.1.1302.4 ≤ v < 2.4.1.222

Affected range stops below 2.2.2.91, so it looks safe — our inference, not a vendor statement

Affected range stops below 2.3.1.130, so it looks safe — our inference, not a vendor statement

Affected range stops below 2.4.1.222, so it looks safe — our inference, not a vendor statement

cisco-firepower-4110 (environment) · cisco-firepower-4120 (environment) · cisco-firepower-4140 (environment) · cisco-firepower-4150 (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)

Nx OS · Cisconpm

95%

v < 13.2(7k)v < 5.2v < 5.2(1)sv3(4.1a)v < 6.2(22)v < 7.1(5)n1(1b)14.0 ≤ v < 14.0(2c)14.1 ≤ v ≤ 14.1(1i)14.1 ≤ v < 14.1(1i)5.2 ≤ v < 5.2(1)sv5(1.2)5.2 ≤ v < 6.2(29)7.0(3)f ≤ v < 9.2(3)7.0(3)i4 ≤ v < 7.0(3)i4(9)7.0(3)i7 ≤ v < 7.0(3)i7(6)7.2 ≤ v < 7.2(0)d1(1)7.3 ≤ v < 7.3(5)n1(1)7.3 ≤ v < 8.48.0 ≤ v < 8.2(3)8.3 ≤ v < 8.3(2)9.2 ≤ v < 9.2(3)

Affected range stops below 13.2(7k), so it looks safe — our inference, not a vendor statement

Affected range stops below 14.0(2c), so it looks safe — our inference, not a vendor statement

Affected range stops below 14.1(1i), so it looks safe — our inference, not a vendor statement

Affected range stops below 5.2, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.2(1)sv3(4.1a), so it looks safe — our inference, not a vendor statement

Affected range stops below 5.2(1)sv5(1.2), so it looks safe — our inference, not a vendor statement

Affected range stops below 6.2(22), so it looks safe — our inference, not a vendor statement

Affected range stops below 6.2(29), so it looks safe — our inference, not a vendor statement

Affected range stops below 7.0(3)i4(9), so it looks safe — our inference, not a vendor statement

Affected range stops below 7.0(3)i7(6), so it looks safe — our inference, not a vendor statement

Affected range stops below 7.1(5)n1(1b), so it looks safe — our inference, not a vendor statement

Affected range stops below 7.2(0)d1(1), so it looks safe — our inference, not a vendor statement

Affected range stops below 7.3(5)n1(1), so it looks safe — our inference, not a vendor statement

Affected range stops below 8.2(3), so it looks safe — our inference, not a vendor statement

Affected range stops below 8.3(2), so it looks safe — our inference, not a vendor statement

Affected range stops below 8.4, so it looks safe — our inference, not a vendor statement

Affected range stops below 9.2(3), so it looks safe — our inference, not a vendor statement

cisco-7000-10-slot (environment) · cisco-7000-18-slot (environment) · cisco-7000-4-slot (environment) · cisco-7000-9-slot (environment) · cisco-7700-10-slot (environment) · cisco-7700-18-slot (environment) · cisco-7700-2-slot (environment) · cisco-7700-6-slot (environment) · cisco-9432pq (environment) · cisco-9536pq (environment) · cisco-9636pq (environment) · cisco-9736pq (environment) · cisco-mds-9132t (environment) · cisco-mds-9148s (environment) · cisco-mds-9148t (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-9506 (environment) · cisco-mds-9509 (environment) · cisco-mds-9513 (environment) · cisco-mds-9706 (environment) · cisco-mds-9710 (environment) · cisco-mds-9718 (environment) · cisco-n77-f312ck-26 (environment) · cisco-n77-f324fq-25 (environment) · cisco-n77-f348xp-23 (environment) · cisco-n77-f430cq-36 (environment) · cisco-n77-m312cq-26l (environment) · cisco-n77-m324fq-25l (environment) · cisco-n77-m348xp-23l (environment) · cisco-n7k-f248xp-25e (environment) · cisco-n7k-f306ck-25 (environment) · cisco-n7k-f312fq-25 (environment) · cisco-n7k-m202cf-22l (environment) · cisco-n7k-m206fq-23l (environment) · cisco-n7k-m224xp-23l (environment) · cisco-n7k-m324fq-25l (environment) · cisco-n7k-m348xp-25l (environment) · cisco-n9k-c92160yc-x (environment) · cisco-n9k-c9236c (environment) · cisco-n9k-c9272q (environment) · cisco-n9k-c93180lc-ex (environment) · cisco-n9k-c93180yc-ex (environment) · cisco-n9k-c93180yc-fx (environment) · cisco-n9k-c9504-fm-r (environment) · cisco-n9k-c9508-fm-r (environment) · cisco-n9k-x9432c-s (environment) · cisco-n9k-x9464px (environment) · cisco-n9k-x9464tx2 (environment) · cisco-n9k-x9564px (environment) · cisco-n9k-x9564tx (environment) · cisco-n9k-x96136yc-r (environment) · cisco-n9k-x9636c-r (environment) · cisco-n9k-x9636c-rx (environment) · cisco-n9k-x9636q-r (environment) · cisco-n9k-x97160yc-ex (environment) · cisco-n9k-x9732c-ex (environment) · cisco-n9k-x9732c-fx (environment) · cisco-n9k-x9736c-ex (environment) · cisco-n9k-x9736c-fx (environment) · cisco-n9k-x9788tc-fx (environment) · cisco-nexus-1000-virtual-edge (environment) · cisco-nexus-1000v-switch (environment) · cisco-nexus-3048 (environment) · cisco-nexus-3524-x-xl (environment) · cisco-nexus-3548-x-xl (environment) · cisco-nexus-36180yc-r (environment) · cisco-nexus-3636c-r (environment) · cisco-nexus-5010 (environment) · cisco-nexus-5020 (environment) · cisco-nexus-5548p (environment) · cisco-nexus-5548up (environment) · cisco-nexus-5596t (environment) · cisco-nexus-5596up (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-6001 (environment) · cisco-nexus-6004 (environment) · cisco-nexus-7000-supervisor-1 (environment) · cisco-nexus-7000-supervisor-2 (environment) · cisco-nexus-7000-supervisor-2e (environment) · cisco-nexus-7700-supervisor-2e (environment) · cisco-nexus-7700-supervisor-3e (environment) · cisco-nexus-92160yc-x (environment) · cisco-nexus-92300yc (environment) · cisco-nexus-93108tc-ex (environment) · cisco-nexus-93108tc-fx (environment) · cisco-nexus-93120tx (environment) · cisco-nexus-9316d-gx (environment) · cisco-nexus-93180lc-ex (environment) · cisco-nexus-93180yc-ex (environment) · cisco-nexus-93180yc-fx (environment) · cisco-nexus-93216tc-fx2 (environment) · cisco-nexus-93240yc-fx2 (environment) · cisco-nexus-9332c (environment) · cisco-nexus-93360yc-fx2 (environment) · cisco-nexus-9336c-fx2 (environment) · cisco-nexus-9348gc-fxp (environment) · cisco-nexus-93600cd-gx (environment) · cisco-nexus-9364c (environment) · cisco-nexus-9500-supervisor-a (environment) · cisco-nexus-9500-supervisor-b (environment) · cisco-nexus-9504 (environment) · cisco-nexus-9508 (environment) · cisco-nexus-9516 (environment) · cisco-x96136yc-r (environment) · cisco-x9636c-r (environment) · cisco-x9636c-rx (environment) · cisco-x9636q-r (environment)

Unified Computing System · Cisco

60%

v < 8.4(1)

Affected range stops below 8.4(1), so it looks safe — our inference, not a vendor statement

7000 10-Slot · Ciscodevice

80%

All versions

7000 18-Slot · Ciscodevice

80%

All versions

7000 4-Slot · Ciscodevice

80%