CVE-2011-0395: Cisco Adaptive Security Appliances (ASA) 5500 series devices with software 8.0 before 8.0(5.20), 8.1 before...

Security readout for executives and security teams

This issue can make certain Cisco ASA 5500 firewalls reload when they receive a RIP routing update. The risk is business interruption, not data theft, but it affects a security gateway. Exposure appears limited to older ASA software where both RIP and Cisco Phone Proxy are configured. Organizations are exposed only if they still run affected Cisco ASA 5500 software and have both RIP and Cisco Phone Proxy configured. The provided data does not identify broader affected product families or default exposure. Treat this as a targeted availability risk for legacy Cisco ASA firewalls. It is not described as compromise or data exposure, but affected perimeter devices can disrupt connectivity. Prioritize validation if ASA 5500 appliances still support routing or voice proxy functions. Mitigation focus: Review Cisco advisory guidance for fixed ASA software releases.; Upgrade affected ASA 8.0, 8.1, 8.2, or 8.3 deployments beyond vulnerable versions.; Disable RIP where it is not operationally required..

Prepared

Jun 24, 2026, 13:28 UTC (UTC+00:00)

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