CVE-2012-1327: Cisco IOS

Medium severity, CVSS 6.1. EPSS: 0.7% chance of exploitation in the next 30 days.

dot11t/t_if_dot11_hal_ath.c in Cisco IOS 12.3, 12.4, 15.0, and 15.1 allows remote attackers to cause a denial of service (assertion failure and reboot) via 802.11 wireless traffic, as demonstrated by a video call from Apple iOS 5.0 on an iPhone 4S, aka Bug ID CSCtt94391.

Affected products

• Cisco IOS: version 12.3 only; version 12.4 only; version 15.0 only; version 15.1 only

Published 2012-05-03. Last modified 2026-06-16.