CVE-2008-2057: The Instant Messenger (IM) inspection engine in Cisco Adaptive Security Appliance (ASA) and Cisco PIX secur...

Security readout for executives and security teams

CVE-2008-2057 is a denial-of-service flaw in the Cisco ASA and Cisco PIX Instant Messenger inspection engine. A specially crafted packet can disrupt affected firewall appliances, potentially interrupting network security services and connectivity. Exposure is most likely in legacy environments still running affected Cisco ASA or PIX software trains. The bundle does not prove exposure for newer ASA releases, non-Cisco firewalls, or environments without the affected IM inspection path. Prioritize this if legacy Cisco firewall appliances remain in production. A successful attack could disrupt perimeter security and business connectivity, but evidence provided does not show current active exploitation. Mitigation focus: Upgrade affected ASA or PIX software to Cisco fixed versions or later.; Review Cisco’s advisory for device-specific upgrade guidance and operational caveats.; Identify and retire unsupported Cisco PIX or obsolete ASA deployments..

Prepared

Jun 28, 2026, 18:52 UTC (UTC+00:00)

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