CVE-2013-1164: Cisco Asr 1001

High severity, CVSS 7.8. EPSS: 1.9% chance of exploitation in the next 30 days.

Cisco IOS XE 3.4 before 3.4.4S, 3.5, and 3.6 on 1000 series Aggregation Services Routers (ASR) does not properly implement the Cisco Multicast Leaf Recycle Elimination (MLRE) feature, which allows remote attackers to cause a denial of service (card reload) via fragmented IPv6 multicast packets, aka Bug ID CSCtz97563.

Affected products

• Cisco Asr 1001
• Cisco Asr 1002
• Cisco Asr 1002-X
• Cisco Asr 1004
• Cisco Asr 1006
• Cisco Asr 1013
• Cisco IOS XE: version 3.4.0as only; version 3.4.0s only; version 3.4.1s only; version 3.4.2s only; version 3.4.3s only; version 3.5.0s only; …

Published 2013-04-11. Last modified 2026-06-16.