CVE-2007-5667: Novell Client

High severity, CVSS 7.2. EPSS: 0.4% chance of exploitation in the next 30 days.

NWFILTER.SYS in Novell Client 4.91 SP 1 through SP 4 for Windows 2000, XP, and Server 2003 makes the \.\nwfilter device available for arbitrary user-mode input via METHOD_NEITHER IOCTLs, which allows local users to gain privileges by passing a kernel address as an argument and overwriting kernel memory locations.

Affected products

• Novell Client: version 4.91 only

Published 2007-11-14. Last modified 2026-06-16.