CVE-2006-2374: Microsoft Windows 2000

Medium severity, CVSS 5.5. EPSS: 1.7% chance of exploitation in the next 30 days.

The Server Message Block (SMB) driver (MRXSMB.SYS) in Microsoft Windows 2000 SP4, XP SP1 and SP2, and Server 2003 SP1 and earlier allows local users to cause a denial of service (hang) by calling the MrxSmbCscIoctlCloseForCopyChunk with the file handle of the shadow device, which results in a deadlock, aka the "SMB Invalid Handle Vulnerability."

Affected products

• Microsoft Windows 2000: affected versions not specified
• Microsoft Windows 2003 Server: affected versions not specified
• Microsoft Windows XP: affected versions not specified

Published 2006-06-13. Last modified 2026-06-16.