CVE-2011-3282: Unspecified vulnerability in Cisco IOS 12.2SRE before 12.2(33)SRE4, 15.0, and 15.1, and IOS XE 2.1.x throug...

Security readout for executives and security teams

This CVE describes a Cisco IOS and IOS XE denial-of-service flaw. If an affected router is running MPLS and receives a specific ICMPv6 condition, the device can reload, causing network disruption. The source bundle does not provide CVSS scoring or evidence of exploitation. Exposure is limited to Cisco IOS or IOS XE devices in the listed versions with an MPLS domain configured. Internet exposure is not established by the sources; affected paths depend on routing, MPLS, and IPv6 packet reachability. Prioritize remediation for MPLS core or provider-edge routers because a device reload can interrupt business connectivity. Urgency is highest where affected versions remain in production and MPLS carries critical traffic. Mitigation focus: Upgrade affected Cisco IOS 12.2SRE systems to 12.2(33)SRE4 or later.; Check Cisco advisory guidance for fixed releases across IOS 15.0, 15.1, and IOS XE branches.; Identify whether MPLS and IPv6 over MPLS are enabled on affected devices..

Prepared

Jun 27, 2026, 17:48 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.