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TI-2001-00006 Aliases CVE-2001-0006GHSA-cgm8-c3pr-78fr

The Winsock2ProtocolCatalogMutex mutex in Windows NT 4.0 has inappropriate Everyone/Full…

Priority LOW 37CWE-732Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

The Winsock2ProtocolCatalogMutex mutex in Windows NT 4.0 has inappropriate Everyone/Full Control permissions, which allows local users to modify the permissions to "No Access" and disable Winsock network connectivity to cause a denial of service, aka the "Winsock Mutex" vulnerability.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.03002 87th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:o:microsoft:windows_nt:4.0:*:*:*:*:*:*:*4.0VulnerableMicrosoft
  • cpe:2.3:o:microsoft:windows_nt:4.0:*:*:*:*:*:*:* Versions 4.0 Vulnerable ·Microsoft

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2001-0006
  2. 2026-10-03 Alias added: GHSA-cgm8-c3pr-78fr

References

Patch 1

Other 1

  • TI-2004-00181 The POSIX component of Microsoft Windows NT and Windows 2000 allows local users to… KEVCVSS 3.1HIGH 7.8
  • TI-2002-00354 smss.exe debugging subsystem in Windows NT and Windows 2000 does not properly… KEVCVSS 3.1HIGH 7.8
  • TI-2004-00977 The WINS service (wins.exe) on Microsoft Windows NT Server 4.0, Windows 2000 Server, and… CVSS 2.0HIGH 10.0
  • TI-2002-00376 Integer overflow in xdr_array function in RPC servers for operating systems that use… CVSS 3.1CRITICAL 9.8
  • TI-2000-01078 Buffer overflow in Microsoft Phone Book Service allows local users to execute arbitrary… CVSS 2.0HIGH 10.0
  • TI-1999-00824 Buffer overflow in IIS 4.0 allows remote attackers to cause a denial of service via a… CVSS 2.0HIGH 10.0
See all 251 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences