CVE-2019-12657
Cisco IOS XE Software Unified Threat Defense Denial of Service Vulnerability
HIGH
7.5
CVSS Score
Published: September 25, 2019 at 08:15 PM UTC
Updated: June 17, 2026 at 02:15 AM UTC
118 products affected across 1 vendorIOS XeAsr 1002-xAsr 1001-X
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Severity
HIGH7.5
Exploit prediction
EPSS 2%
SSVC
No known exploit
Description
A vulnerability in Unified Threat Defense (UTD) in Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload. The vulnerability is due to improper validation of IPv6 packets through the UTD feature. An attacker could exploit this vulnerability by sending IPv6 traffic through an affected device that is configured with UTD. A successful exploit could allow the attacker to cause the device to reload, resulting in a denial of service (DoS) condition.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
cisco-4321-integrated-services-router (environment) · cisco-4331-integrated-services-router (environment) · cisco-4351-integrated-services-router (environment) · cisco-4431-integrated-services-router (environment) · cisco-4451-x-integrated-services-router (environment) · cisco-asr-1000 (environment) · cisco-asr-1001-hx (environment) · cisco-asr-1001-x (environment) · cisco-asr-1002-hx (environment) · cisco-asr-1002-x (environment) · cisco-catalyst-3650-12x48fd-e (environment) · cisco-catalyst-3650-12x48fd-l (environment) · cisco-catalyst-3650-12x48fd-s (environment) · cisco-catalyst-3650-12x48uq-e (environment) · cisco-catalyst-3650-12x48uq-l (environment) · cisco-catalyst-3650-12x48uq-s (environment) · cisco-catalyst-3650-12x48ur-e (environment) · cisco-catalyst-3650-12x48ur-l (environment) · cisco-catalyst-3650-12x48ur-s (environment) · cisco-catalyst-3650-12x48uz-e (environment) · cisco-catalyst-3650-12x48uz-l (environment) · cisco-catalyst-3650-12x48uz-s (environment) · cisco-catalyst-3650-24pd-e (environment) · cisco-catalyst-3650-24pd-l (environment) · cisco-catalyst-3650-24pd-s (environment) · cisco-catalyst-3650-24pdm-e (environment) · cisco-catalyst-3650-24pdm-l (environment) · cisco-catalyst-3650-24pdm-s (environment) · cisco-catalyst-3650-24ps-e (environment) · cisco-catalyst-3650-24ps-l (environment) · cisco-catalyst-3650-24ps-s (environment) · cisco-catalyst-3650-24td-e (environment) · cisco-catalyst-3650-24td-l (environment) · cisco-catalyst-3650-24td-s (environment) · cisco-catalyst-3650-24ts-e (environment) · cisco-catalyst-3650-24ts-l (environment) · cisco-catalyst-3650-24ts-s (environment) · cisco-catalyst-3650-48fd-e (environment) · cisco-catalyst-3650-48fd-l (environment) · cisco-catalyst-3650-48fd-s (environment) · cisco-catalyst-3650-48fq-e (environment) · cisco-catalyst-3650-48fq-l (environment) · cisco-catalyst-3650-48fq-s (environment) · cisco-catalyst-3650-48fqm-e (environment) · cisco-catalyst-3650-48fqm-l (environment) · cisco-catalyst-3650-48fqm-s (environment) · cisco-catalyst-3650-48fs-e (environment) · cisco-catalyst-3650-48fs-l (environment) · cisco-catalyst-3650-48fs-s (environment) · cisco-catalyst-3650-48pd-e (environment) · cisco-catalyst-3650-48pd-l (environment) · cisco-catalyst-3650-48pd-s (environment) · cisco-catalyst-3650-48pq-e (environment) · cisco-catalyst-3650-48pq-l (environment) · cisco-catalyst-3650-48pq-s (environment) · cisco-catalyst-3650-48ps-e (environment) · cisco-catalyst-3650-48ps-l (environment) · cisco-catalyst-3650-48ps-s (environment) · cisco-catalyst-3650-48td-e (environment) · cisco-catalyst-3650-48td-l (environment) · cisco-catalyst-3650-48td-s (environment) · cisco-catalyst-3650-48tq-e (environment) · cisco-catalyst-3650-48tq-l (environment) · cisco-catalyst-3650-48tq-s (environment) · cisco-catalyst-3650-48ts-e (environment) · cisco-catalyst-3650-48ts-l (environment) · cisco-catalyst-3650-48ts-s (environment) · cisco-catalyst-3650-8x24pd-e (environment) · cisco-catalyst-3650-8x24pd-l (environment) · cisco-catalyst-3650-8x24pd-s (environment) · cisco-catalyst-3650-8x24uq-e (environment) · cisco-catalyst-3650-8x24uq-l (environment) · cisco-catalyst-3650-8x24uq-s (environment) · cisco-catalyst-3850-12s-e (environment) · cisco-catalyst-3850-12s-s (environment) · cisco-catalyst-3850-12xs-e (environment) · cisco-catalyst-3850-12xs-s (environment) · cisco-catalyst-3850-16xs-e (environment) · cisco-catalyst-3850-16xs-s (environment) · cisco-catalyst-3850-24p-e (environment) · cisco-catalyst-3850-24p-l (environment) · cisco-catalyst-3850-24p-s (environment) · cisco-catalyst-3850-24s-e (environment) · cisco-catalyst-3850-24s-s (environment) · cisco-catalyst-3850-24t-e (environment) · cisco-catalyst-3850-24t-l (environment) · cisco-catalyst-3850-24t-s (environment) · cisco-catalyst-3850-24u-e (environment) · cisco-catalyst-3850-24u-l (environment) · cisco-catalyst-3850-24u-s (environment) · cisco-catalyst-3850-24xs-e (environment) · cisco-catalyst-3850-24xs-s (environment) · cisco-catalyst-3850-24xu-e (environment) · cisco-catalyst-3850-24xu-l (environment) · cisco-catalyst-3850-24xu-s (environment) · cisco-catalyst-3850-32xs-e (environment) · cisco-catalyst-3850-32xs-s (environment) · cisco-catalyst-3850-48f-e (environment) · cisco-catalyst-3850-48f-l (environment) · cisco-catalyst-3850-48f-s (environment) · cisco-catalyst-3850-48p-e (environment) · cisco-catalyst-3850-48p-l (environment) · cisco-catalyst-3850-48p-s (environment) · cisco-catalyst-3850-48t-e (environment) · cisco-catalyst-3850-48t-l (environment) · cisco-catalyst-3850-48t-s (environment) · cisco-catalyst-3850-48u-e (environment) · cisco-catalyst-3850-48u-l (environment) · cisco-catalyst-3850-48u-s (environment) · cisco-catalyst-3850-48xs-e (environment) · cisco-catalyst-3850-48xs-f-e (environment) · cisco-catalyst-3850-48xs-f-s (environment) · cisco-catalyst-3850-48xs-s (environment) · cisco-catalyst-c3850-12x48u-e (environment) · cisco-catalyst-c3850-12x48u-l (environment) · cisco-catalyst-c3850-12x48u-s (environment) · cisco-cloud-services-router-1000v (environment)
All versions
All versions
All versions
All versions
All versions
Asr 1001-Hx· Ciscodevice
80%All versions
Asr 1001-X· Ciscodevice
80%All versions
Asr 1002-Hx· 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-20190925-utdSSVC — Action Prioritization
SSVCNo known exploitAutomatablePartial impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-20
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