CVE-2012-3899: sensorApp on Cisco IPS 4200 series sensors 6.0, 6.2, and 7.0 does not properly allocate memory, which allow...

Security readout for executives and security teams

CVE-2012-3899 is a denial-of-service flaw in Cisco IPS 4200 series sensors. Specially crafted or problematic network traffic can crash the sensorApp process, causing memory corruption and a traffic-inspection outage. This affects visibility and detection, not direct data theft or remote code execution based on the provided sources. Exposure is likely limited to organizations still operating legacy Cisco IPS 4200 series sensors on versions 6.0, 6.2, or 7.0. Internet exposure is not required if attacker-controlled traffic can traverse or be inspected by the sensor. Prioritize if these sensors provide critical intrusion detection or prevention coverage. A crash could create a monitoring blind spot. The issue is old and legacy-focused, so urgency depends on whether affected devices remain in production. Mitigation focus: Inventory Cisco IPS 4200 sensors and software versions.; Check Cisco guidance and the referenced IPS readme for fixed or recommended releases.; Upgrade, replace, or retire affected legacy IPS sensors where feasible..

Prepared

Jun 27, 2026, 21:20 UTC (UTC+00:00)

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