TI-2019-09465 Aliases CVE-2019-12669 GHSA-6588-55q8-wmrc

Cisco IOS and IOS XE Software Change of Authorization Denial of Service Vulnerability

LOW 36CWE-20Published 2019-09-25 · Updated 2024-11-21

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: None · None · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

A vulnerability in the RADIUS Change of Authorization (CoA) code of Cisco TrustSec, a feature within Cisco IOS XE Software, could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper handling of a malformed packet. An attacker could exploit this vulnerability by sending a malformed packet to an affected device. A successful exploit could allow the attacker to cause a DoS condition on the affected device.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.01829 78th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Cisco	Cisco IOS XE Software 3.2.9SG	all versions	—	No fix listed	CNA

Cisco IOS XE Software 3.2.9SG VendorCisco Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 6

CPE	Versions	Role	Vendor
cpe:2.3:o:cisco:ios:15.2\(3\)e:::::::*	15.2(3)e	Vulnerable	Cisco
cpe:2.3:o:cisco:ios:15.2\(3\)e5:::::::*	15.2(3)e5	Vulnerable	Cisco
cpe:2.3:o:cisco:ios:16.11.1:::::::*	16.11.1	Vulnerable	Cisco
cpe:2.3:h:cisco:catalyst_3560:-:::::::*	not specified by NVD	Running on	Cisco
cpe:2.3:h:cisco:catalyst_3560-e:-:::::::*	not specified by NVD	Running on	Cisco
cpe:2.3:h:cisco:catalyst_3560-x:-:::::::*	not specified by NVD	Running on	Cisco

cpe:2.3:o:cisco:ios:15.2\(3\)e:*:*:*:*:*:*:* Versions 15.2(3)e Vulnerable ·Cisco
cpe:2.3:o:cisco:ios:15.2\(3\)e5:*:*:*:*:*:*:* Versions 15.2(3)e5 Vulnerable ·Cisco
cpe:2.3:o:cisco:ios:16.11.1:*:*:*:*:*:*:* Versions 16.11.1 Vulnerable ·Cisco
cpe:2.3:h:cisco:catalyst_3560:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
cpe:2.3:h:cisco:catalyst_3560-e:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
cpe:2.3:h:cisco:catalyst_3560-x:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco

Remediation

No fixed version listed by the sources yet.

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

Release · 2019-09-25
Cisco IOS XE Software 3.2.9SG n/a
2 records Highest priority Priority LOW 2 LOW
Other records, highest priority first
- TI-2019-09467 Cisco IOS XE Software Consent Token Bypass VulnerabilityPriority LOW 36
Show all 2 records →

Timeline

2026-10-02 Threatist record created from CVE-2019-12669
2026-10-03 Alias added: GHSA-6588-55q8-wmrc

References

Advisory 1

20190925 Cisco IOS and IOS XE Software Change of Authorization Denial of Service Vulnerability

TI-2018-00138 Improper input validation in Cisco IOS and IOS XE KEVCVSS 3.1CRITICAL 9.8
TI-2017-09019 Improper input validation in Cisco IOS and IOS XE KEVCVSS 3.1CRITICAL 9.8
TI-2017-02977 Improper input validation in Cisco IOS and IOS XE Software KEVCVSS 3.1CRITICAL 9.8
TI-2018-00135 Memory corruption in Cisco IOS, IOS XE, and IOS XR KEVCVSS 3.1HIGH 8.8
TI-2017-04499 Memory corruption in Cisco IOS KEVCVSS 3.1HIGH 8.8
TI-2017-04498 Memory corruption in Cisco IOS KEVCVSS 3.1HIGH 8.8

See all 617 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences