CVE-2010-2829: Cisco IOS

High severity, CVSS 7.8. EPSS: 1.8% chance of exploitation in the next 30 days.

Unspecified vulnerability in the H.323 implementation in Cisco IOS 12.1 through 12.4 and 15.0 through 15.1, and IOS XE 2.5.x before 2.5.2 and 2.6.x before 2.6.1, allows remote attackers to cause a denial of service (traceback and device reload) via crafted H.323 packets, aka Bug ID CSCtd33567.

Affected products

• Cisco IOS: version 12.1t only; version 12.1xi only; version 12.1xj only; version 12.1xl only; version 12.1xm only; version 12.1xp only; …
• Cisco IOS XE: version 2.5.0 only; version 2.5.1 only; version 2.6.0 only

Published 2010-09-23. Last modified 2026-06-16.