Cisco IOS Dual-stack Router IPv6 Denial Of Service Vulnerability

Cisco IOS Dual-stack Router IPv6 Denial Of Service Vulnerability

Cisco IOS-based dual-stack routers are prone to a denial-of-service vulnerability. This issue can occur when a specially crafted IPv6 packet is sent to the device. However, for an exploit to succeed, the device must have certain IPv4 UDP services enabled.

A successful exploit may cause the affected interface to stop responding, or in some scenarios, may crash the device.

Cisco has assigned Bug ID CSCse56501 to this vulnerability.