CVE-2011-3299: Cisco Adaptive Security Appliances (ASA) 5500 series devices, and the ASA Services module in Cisco Catalyst...

Security readout for executives and security teams

This flaw can let a remote attacker crash and reload affected Cisco firewall appliances using crafted SunRPC traffic. For executives, the risk is service disruption at a network security choke point, not data theft. Exposure matters most where old ASA, ASA Services Module, or FWSM deployments still protect critical traffic. Likely exposure is limited to organizations still running legacy Cisco ASA 5500, Catalyst 6500 ASA Services Module, or FWSM software below the fixed versions listed by Cisco and CVE records. Treat this as high priority if affected devices remain in production, especially at internet or data-center boundaries. A forced firewall reload can interrupt business connectivity even without data compromise. Mitigation focus: Upgrade ASA software to the fixed release for the deployed train.; Upgrade FWSM software to the fixed release for the deployed train.; Review Cisco advisories for exact supported upgrade paths and operational caveats..

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.