CVE-2025-32709highunder attackCWE-416

CVE-2025-32709: high-severity vulnerability in Microsoft Windows 10 Version 1507

Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability

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71Vexday Risk Score

Prioritize patching. It under exploitation confirmed by CISA and has a public proof of concept.

ssvc Actcvss 7.8epss 1.8%
from disclosure to weapon114 days
Published on NVDMay 13
1st PoC+114d
CISA KEVMay 13
Action required by CISAfederal deadline: 2025-06-03

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

In short

A bug in Windows networking software allows someone with basic user access to crash the system or gain admin-level control by exploiting unsafe memory handling.

Technical detail

Null pointer dereference in the Windows Ancillary Function Driver for WinSock (CWE-416) enables local privilege escalation when an authenticated attacker triggers improper memory access, leading to kernel-mode code execution without requiring additional exploitation techniques.

Summary generated and translated by AI from the official description.

The full analysis of this CVE is available in Portuguese →

Null pointer dereference in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Affected products
Microsoft · Windows 10 Version 1507Microsoft · Windows 10 Version 1607Microsoft · Windows 10 Version 1809Microsoft · Windows 10 Version 21H2Microsoft · Windows 10 Version 22H2Microsoft · Windows 11 version 22H2Microsoft · Windows 11 version 22H3Microsoft · Windows 11 Version 23H2Microsoft · Windows 11 Version 24H2Microsoft · Windows Server 2008 R2 Service Pack 1Microsoft · Windows Server 2008 R2 Service Pack 1 (Server Core installation)Microsoft · Windows Server 2008 Service Pack 2Microsoft · Windows Server 2008 Service Pack 2 (Server Core installation)Microsoft · Windows Server 2012Microsoft · Windows Server 2012 R2Microsoft · Windows Server 2012 R2 (Server Core installation)Microsoft · Windows Server 2012 (Server Core installation)Microsoft · Windows Server 2016Microsoft · Windows Server 2016 (Server Core installation)Microsoft · Windows Server 2019Microsoft · Windows Server 2019 (Server Core installation)Microsoft · Windows Server 2022Microsoft · Windows Server 2022, 23H2 Edition (Server Core installation)Microsoft · Windows Server 2025Microsoft · Windows Server 2025 (Server Core installation)
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