What’s Vulnerable › Vulnerabilities

CVE-2006-3942

• Severity: high (CVSS 7.8 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 75.0% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2006-07-31 · updated 2026-06-16
• Weakness: CWE-20

Description

The server driver (srv.sys) in Microsoft Windows NT 4.0, 2000, XP, and Server 2003 allows remote attackers to cause a denial of service (system crash) via an SMB_COM_TRANSACTION SMB message that contains a string without null character termination, which leads to a NULL dereference in the ExecuteTransaction function, possibly related to an "SMB PIPE," aka the "Mailslot DOS" vulnerability. NOTE: the name "Mailslot DOS" was derived from incomplete initial research; the vulnerability is not associated with a mailslot.

Affected products

• Microsoft Windows 2000: all versions
• Microsoft Windows 2003 Server: 64-bit, itanium, r2, sp1
• Microsoft Windows XP Service Pack 3: all versions

References

• http://blogs.technet.com/msrc/archive/2006/07/28/443837.aspx
• http://secunia.com/advisories/21276
• http://securitytracker.com/id?1016606
• http://securitytracker.com/id?1017035
• http://www.coresecurity.com/common/showdoc.php?idx=562&idxseccion=10
• http://www.osvdb.org/27644
• http://www.securityfocus.com/archive/1/443287/100/200/threaded
• http://www.securityfocus.com/archive/1/449179/100/0/threaded
• http://www.securityfocus.com/bid/19215
• http://www.vupen.com/english/advisories/2006/3037
• http://xforce.iss.net/xforce/alerts/id/231
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2006/ms06-063

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