CVE-2014-3357: Cisco IOS

High severity, CVSS 7.8. EPSS: 2.9% chance of exploitation in the next 30 days.

Cisco IOS 15.0, 15.1, 15.2, and 15.4 and IOS XE 3.3.xSE before 3.3.2SE, 3.3.xXO before 3.3.1XO, 3.5.xE before 3.5.2E, and 3.11.xS before 3.11.1S allow remote attackers to cause a denial of service (device reload) via malformed mDNS packets, aka Bug ID CSCul90866.

Affected products

• Cisco IOS: version 15.0 only; version 15.1 only; version 15.2 only; version 15.4 only
• Cisco IOS XE: version 3.3(.0)xo only; version 3.3.0se only; version 3.3.1se only; version 3.5.0e only; version 3.5.1e only; version 3.11.0s only

Published 2014-09-25. Last modified 2026-06-17.