CVE-2014-3359: Cisco IOS

High severity, CVSS 7.8. EPSS: 2.8% chance of exploitation in the next 30 days.

Memory leak in Cisco IOS 15.1 through 15.4 and IOS XE 3.4.xS, 3.5.xS, 3.6.xS, and 3.7.xS before 3.7.6S; 3.8.xS, 3.9.xS, and 3.10.xS before 3.10.1S; and 3.11.xS before 3.12S allows remote attackers to cause a denial of service (memory consumption or device reload) via malformed DHCPv6 packets, aka Bug ID CSCum90081.

Affected products

• Cisco IOS: version 15.1 only; version 15.2 only; version 15.3 only; version 15.4 only
• Cisco IOS XE: version 3.4.0s only; version 3.4.1s only; version 3.4.2s only; version 3.4.3s only; version 3.4.4s only; version 3.4.5s only; …

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