CVE-2012-1310: Cisco IOS

High severity, CVSS 7.8. EPSS: 2.7% chance of exploitation in the next 30 days.

Memory leak in the Zone-Based Firewall in Cisco IOS 12.4, 15.0, 15.1, and 15.2 allows remote attackers to cause a denial of service (memory consumption or device reload) via crafted IP packets, aka Bug ID CSCto89536.

Affected products

• Cisco IOS: version 12.4 only; version 15.0 only; version 15.1 only; version 15.2 only

Published 2012-03-29. Last modified 2026-06-16.