CVE-2007-0917: Cisco IOS

Medium severity, CVSS 6.4. EPSS: 1.9% chance of exploitation in the next 30 days.

The Intrusion Prevention System (IPS) feature for Cisco IOS 12.4XE to 12.3T allows remote attackers to bypass IPS signatures that use regular expressions via fragmented packets.

Affected products

• Cisco IOS: version 12.3t only; version 12.3xq only; version 12.3xr only; version 12.3xs only; version 12.3xw only; version 12.3xx only; …

Published 2007-02-14. Last modified 2026-06-16.