CVE-2012-3946

Name of the Vulnerable Software and Affected Versions Cisco IOS versions prior to 15.3(2)S

Description The issue allows remote attackers to bypass interface ACL restrictions under certain circumstances by sending IPv6 packets. This occurs in a scenario where expected packet drops do not happen for a small percentage of the packets.

Recommendations For versions prior to 15.3(2)S, update to version 15.3(2)S or later to resolve the issue.