CVE-2007-0918: The ATOMIC.TCP signature engine in the Intrusion Prevention System (IPS) feature for Cisco IOS 12.4XA, 12.3...

Security readout for executives and security teams

Certain Cisco IOS devices using the IPS feature can suffer an availability failure from manipulated network traffic. The reported impact is an IPS crash and traffic loss, not data theft or code execution. Business urgency depends on whether affected IOS trains are deployed on critical network paths. Exposure is likely limited to Cisco IOS 12.4XA, 12.3YA, 12.3T, and other affected trains when the IPS feature is enabled. The bundle does not prove exposure for Cisco IOS deployments without IOS IPS enabled. Treat as high priority where affected Cisco IOS IPS devices protect or route important business traffic. It is an availability risk to network operations. If IOS IPS is not deployed, urgency is lower but inventory confirmation is still required. Mitigation focus: Identify Cisco IOS devices running affected trains with IOS IPS enabled.; Review Cisco advisory 20070213 for vendor-approved fixes and mitigations.; Apply Cisco-recommended IOS or IPS updates where applicable..

Prepared

Jun 29, 2026, 07:36 UTC (UTC+00:00)

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