CVE-2006-2374

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.7% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2006-06-13 · updated 2026-06-16
Weakness: CWE-667

Description

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: all versions
Microsoft Windows 2003 Server: all versions
Microsoft Windows XP Service Pack 3: all versions

References

http://secunia.com/advisories/20635
http://securitytracker.com/id?1016288
http://www.idefense.com/intelligence/vulnerabilities/display.php?id=409
http://www.osvdb.org/26439
http://www.securityfocus.com/bid/18357
http://www.vupen.com/english/advisories/2006/2327
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2006/ms06-030
https://exchange.xforce.ibmcloud.com/vulnerabilities/26830
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A1827
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A1841
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A1850
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A1979

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