Unspecified vulnerability in Cisco Intrusion Prevention System (IPS) 5.x before 5.1(8)E2 and 6.x before 6.0(5)E2, when inline mode and jumbo Ethernet support are enabled, allows remote attackers to cause a denial of service (panic), and possibly bypass intended restrictions on network traffic, via a "specific series of jumbo Ethernet frames."

Cisco Intrusion Prevention System (IPS) Software allows remote attackers to cause a denial of service (MainApp process outage) via malformed SNMP packets, aka Bug IDs CSCum52355 and CSCul49309.

sensorApp on Cisco IPS 4200 series sensors 6.0, 6.2, and 7.0 does not properly allocate memory, which allows remote attackers to cause a denial of service (memory corruption and process crash, and traffic-inspection outage) via network traffic, aka Bug ID CSCtn23051.