CVE-2006-3942

Exp

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.

Published: 2006-07-31 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2006-3942 is rated High Exploit Risk (76/100): CVSS High severity, with high exploitation likelihood (EPSS 73.75%, 99th percentile). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2006-3942

EDB-ID Source Kind Published Link
2057 exploit_db edb 2006-07-21 Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2006-3942

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 86.20% 73.75% -12.46%
2 2025-12-28 85.63% 86.20% +0.58%
3 2025-12-27 — 85.63% —

Full EPSS history (23 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2006-3942

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.8 2.0 HIGH
AV:N/AC:L/Au:N/C:N/I:N/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:C)
Complete availability impact.
 10.0 6.9 [email protected]

Weakness enumeration for CVE-2006-3942

Affected software / configurations for CVE-2006-3942

Vendor Product Version Raw CPE
microsoft windows_2000 — cpe:2.3:o:microsoft:windows_2000:*:sp4:*:fr:*:*:*:*
microsoft windows_2003_server 64-bit cpe:2.3:o:microsoft:windows_2003_server:64-bit:*:*:*:*:*:*:*
microsoft windows_2003_server itanium cpe:2.3:o:microsoft:windows_2003_server:itanium:*:*:*:*:*:*:*
microsoft windows_2003_server r2 cpe:2.3:o:microsoft:windows_2003_server:r2:*:*:*:*:*:*:*
microsoft windows_2003_server sp1 cpe:2.3:o:microsoft:windows_2003_server:sp1:*:*:*:*:*:*:*
microsoft windows_2003_server sp1 cpe:2.3:o:microsoft:windows_2003_server:sp1:*:itanium:*:*:*:*:*
microsoft windows_xp — cpe:2.3:o:microsoft:windows_xp:*:*:64-bit:*:*:*:*:*
microsoft windows_xp — cpe:2.3:o:microsoft:windows_xp:*:sp1:tablet_pc:*:*:*:*:*
microsoft windows_xp — cpe:2.3:o:microsoft:windows_xp:*:sp2:tablet_pc:*:*:*:*:*

References for CVE-2006-3942

cvelogic Threat Intelligence