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
Published May 7, 2001
7.1
HIGHCVSS 3.1
EPSS 3.00%
Description
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.
Affected products
No data.
- 4.0
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
No CVSS v3.0 score for this CVE.
AV:L/AC:L/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
NoTechnical Impact
PartialDecision
n/aAssessed Jan 31, 2024 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.00% (0.03002) | 86.91th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.00% (0.03002) | 85.59th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.14% (0.00138) | 31.13th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.07% (0.00073) | 33.70th | v3 (v2023.03.01) |
| Jan 27, 2024 | 0.07% (0.00073) | 30.25th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.06% (0.00062) | 24.65th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.46% (0.02461) | 81.64th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.46% (0.02461) | 79.89th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.46% (0.02461) | 58.48th | v2 (v2022.01.01) |
References (3)
- http://marc.info/?l=bugtraq&m=98075221915234&w=2 mailing-listx_refsource_BUGTRAQMailing List
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2001/ms01-003 vendor-advisoryx_refsource_MSPatchRelease NotesVendor Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/6006 vdb-entryx_refsource_XFThird Party AdvisoryVDB Entry
| Link | Providers | Tags |
|---|---|---|
| http://marc.info/?l=bugtraq&m=98075221915234&w=2 | mailing-listx_refsource_BUGTRAQMailing List | |
| https://docs.microsoft.com/en-us/security-updates/securitybulletins/2001/ms01-003 | vendor-advisoryx_refsource_MSPatchRelease NotesVendor Advisory | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/6006 | vdb-entryx_refsource_XFThird Party AdvisoryVDB Entry |
Change history (0)
No recorded changes yet.