CISA KEV catalog
Confirmed active exploitation.
Listed in CISA's catalog of Known Exploited Vulnerabilities: attackers are using it in real attacks. Patch it with priority.
- Name
- Microsoft Windows Ancillary Function Driver for WinSock Privilege Escalation Vulnerability
- Added to catalog
- Remediation due date (US federal)
- Required action
- Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Description
Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability
Affected products
microsoft: windows 10 1507; microsoft: windows 10 1607; microsoft: windows 10 1809; microsoft: windows 10 21h2; microsoft: windows 10 22h2; microsoft: windows 11 21h2; microsoft: windows 11 22h2; microsoft: windows 11 23h2; microsoft: windows 11 24h2; microsoft: windows server 2008; microsoft: windows server 2012; microsoft: windows server 2016; microsoft: windows server 2019; microsoft: windows server 2022; microsoft: windows server 2022 23h2
References3
- msrc.microsoft.com/update-guide/vulnerability/CVE-2024-38193 PatchVendor Advisory
- www.exploit-db.com/exploits/52284 Exploit
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=… US Government Resource
Metrics
- CVSS 3.1
-
7.8
HIGH
Score source: CNA
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 29% percentile: 98 · as of 3 November 2026
- CWE
- CWE-416
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.