Elevation of Privilege Vulnerability in Windows Ancillary Function Driver
CVE-2025-62213

7HIGH

Key Information:

Vendor

Microsoft
Status
Windows 10 Version 1809
Windows Server 2019
Windows Server 2019 (server Core Installation)
Windows Server 2022
Vendor
CVE Published:
11 November 2025

What is CVE-2025-62213?

A vulnerability in the Windows Ancillary Function Driver for WinSock allows an authorized attacker to exploit a use-after-free issue, enabling the attacker to elevate their privileges on the affected system. This flaw poses a serious risk as it can be exploited locally, allowing unauthorized actions to be performed by the attacker on systems running vulnerable versions of Windows.

Affected Version(s)

Windows 10 Version 1607 32-bit Systems 10.0.14393.0 < 10.0.14393.8594

Windows 10 Version 1809 32-bit Systems 10.0.17763.0 < 10.0.17763.8027

Windows 10 Version 21H2 32-bit Systems 10.0.19044.0 < 10.0.19044.6575

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE...
vendor-advisory

CVSS V3.1

Score:
7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
High
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
.
CVE-2025-62213 : Elevation of Privilege Vulnerability in Windows Ancillary Function Driver