Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Listed in CISA KEV
- Fix
- Fixed in 10.0.10240.21014, 10.0.14393.8066, 10.0.17763.7314, 10.0.19044.5854, 10.0.19045.5854, and 9 more
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
The Windows Ancillary Function Driver for WinSock, a core Windows component that handles network socket operations, is affected by this flaw. A logged-in attacker with local access could exploit it to gain higher system privileges than they are authorized to have.
Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.
Read the original description
Null pointer dereference in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
Timeline
- Added to CISA KEV
CISA has evidence of exploitation in the wild
- CVE published
- CISA remediation deadline
Due date for US federal agencies to patch
- Record last updated
Affected versions
- Microsoft Windows 10 Version 1507
From 10.0.10240.0 · fixed in 10.0.10240.21014
- Microsoft Windows 10 Version 1607
From 10.0.14393.0 · fixed in 10.0.14393.8066
- Microsoft Windows 10 Version 1809
From 10.0.17763.0 · fixed in 10.0.17763.7314
- Microsoft Windows 10 Version 21H2
From 10.0.19044.0 · fixed in 10.0.19044.5854
- Microsoft Windows 10 Version 22H2
From 10.0.19045.0 · fixed in 10.0.19045.5854
- Microsoft Windows 11 version 22H2
From 10.0.22621.0 · fixed in 10.0.22621.5335
- Microsoft Windows 11 version 22H3
From 10.0.22631.0 · fixed in 10.0.22631.5335
- Microsoft Windows 11 Version 23H2
From 10.0.22631.0 · fixed in 10.0.22631.5335
- Microsoft Windows 11 Version 24H2
From 10.0.26100.0 · fixed in 10.0.26100.4061
- Microsoft Windows Server 2008 R2 Service Pack 1
From 6.1.7601.0 · fixed in 6.1.7601.27730
- Microsoft Windows Server 2008 R2 Service Pack 1 (Server Core installation)
From 6.1.7601.0 · fixed in 6.1.7601.27730
- Microsoft Windows Server 2008 Service Pack 2
From 6.0.6003.0 · fixed in 6.0.6003.23317
- Microsoft Windows Server 2008 Service Pack 2 (Server Core installation)
From 6.0.6003.0 · fixed in 6.0.6003.23317
- Microsoft Windows Server 2012
From 6.2.9200.0 · fixed in 6.2.9200.25475
- Microsoft Windows Server 2012 (Server Core installation)
From 6.2.9200.0 · fixed in 6.2.9200.25475
- Microsoft Windows Server 2012 R2
From 6.3.9600.0 · fixed in 6.3.9600.22577
- Microsoft Windows Server 2012 R2 (Server Core installation)
From 6.3.9600.0 · fixed in 6.3.9600.22577
- Microsoft Windows Server 2016
From 10.0.14393.0 · fixed in 10.0.14393.8066
- Microsoft Windows Server 2016 (Server Core installation)
From 10.0.14393.0 · fixed in 10.0.14393.8066
- Microsoft Windows Server 2019
From 10.0.17763.0 · fixed in 10.0.17763.7314
- Microsoft Windows Server 2019 (Server Core installation)
From 10.0.17763.0 · fixed in 10.0.17763.7314
- Microsoft Windows Server 2022
From 10.0.20348.0 · fixed in 10.0.20348.3692
- Microsoft Windows Server 2022, 23H2 Edition (Server Core installation)
From 10.0.25398.0 · fixed in 10.0.25398.1611
- Microsoft Windows Server 2025
From 10.0.26100.0 · fixed in 10.0.26100.4061
- Microsoft Windows Server 2025 (Server Core installation)
From 10.0.26100.0 · fixed in 10.0.26100.4061