CVE-2010-2831: Unspecified vulnerability in the NAT for SIP implementation in Cisco IOS 12.1 through 12.4 and 15.0 through...

Security readout for executives and security teams

This flaw can make affected Cisco IOS routers or gateways reload when they handle certain SIP-related transit traffic. A reload is an availability event: voice, NAT, or routed services may drop until the device recovers. The source bundle does not provide CVSS, fixed releases, or detailed workaround information. Exposure is most likely on Cisco IOS devices in the listed version ranges that perform NAT for SIP or process SIP transit traffic. The bundle lacks CPEs, exact platform lists, and fixed-release mapping, so asset validation must rely on Cisco advisory details and local configuration review. Treat this as an availability risk for network and voice infrastructure. Prioritize internet-facing or SIP-transit devices first, especially where a reload would disrupt customer connectivity, emergency communications, or critical operations. Mitigation focus: Review Cisco advisory for affected platforms, fixed releases, and supported workarounds.; Inventory Cisco IOS 12.1-12.4 and 15.0-15.1 devices.; Prioritize devices handling SIP, voice gateways, NAT, or UDP 5060 transit traffic..

Prepared

Jun 28, 2026, 01:40 UTC (UTC+00:00)

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