CVE-2013-1143: Cisco IOS

High severity, CVSS 7.1. EPSS: 1.4% chance of exploitation in the next 30 days.

The RSVP protocol implementation in Cisco IOS 12.2 and 15.0 through 15.2 and IOS XE 3.1.xS through 3.4.xS before 3.4.5S and 3.5.xS through 3.7.xS before 3.7.2S, when MPLS-TE is enabled, allows remote attackers to cause a denial of service (incorrect memory access and device reload) via a traffic engineering PATH message in an RSVP packet, aka Bug ID CSCtg39957.

Affected products

• Cisco IOS: version 12.2 only; version 15.0 only; version 15.0(1)se only; version 15.1 only; version 15.2 only; version 15.3 only
• Cisco IOS XE: version 3.1.0s only; version 3.1.1s only; version 3.1.2s only; version 3.1.3s only; version 3.1.4s only; version 3.2.0s only; …

Published 2013-03-28. Last modified 2026-06-16.