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.

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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

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