CVE-2008-1151: Cisco IOS

High severity, CVSS 7.1. EPSS: 1.9% chance of exploitation in the next 30 days.

Memory leak in the virtual private dial-up network (VPDN) component in Cisco IOS before 12.3 allows remote attackers to cause a denial of service (memory consumption) via a series of PPTP sessions, related to "dead memory" that remains allocated after process termination, aka bug ID CSCsj58566.

Affected products

• Cisco IOS: up to and including 12.2

Published 2008-03-27. Last modified 2026-06-16.