CVE-2008-3802: Cisco IOS

High severity, CVSS 7.1. EPSS: 2.5% chance of exploitation in the next 30 days.

Unspecified vulnerability in the Session Initiation Protocol (SIP) implementation in Cisco IOS 12.2 through 12.4, when VoIP is configured, allows remote attackers to cause a denial of service (device reload) via unspecified valid SIP messages, aka Cisco bug ID CSCsk42759, a different vulnerability than CVE-2008-3800 and CVE-2008-3801.

Affected products

• Cisco IOS: version 12.2b only; version 12.2bx only; version 12.2by only; version 12.2cz only; version 12.2mc only; version 12.2t only; …

Published 2008-09-26. Last modified 2026-06-16.