What is the CVSS score of CVE-2025-32709?

CVE-2025-32709 has a CVSS 3.1 base score of 7.8 (High). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 1.0%.

Which versions of Windows are affected by CVE-2025-32709?

Organizations using Null pointer dereference in Windows Ancillary Function Driver for WinSock face notable risk from CVE-2025-32709, a use-after-free vulnerability rated CVSS 7.8.

Is CVE-2025-32709 being actively exploited?

Yes, CVE-2025-32709 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, confirming active in-the-wild exploitation. Immediate patching is required.

How to fix or mitigate CVE-2025-32709?

Within 24 hours: Identify all affected systems and apply vendor patches immediately. If patching is delayed, consider network segmentation to limit exposure.

Windows CVE-2025-32709

HIGH

Use After Free (CWE-416)

2025-05-13 secure@microsoft.com

Windows Denial Of Service Use After Free Memory Corruption Microsoft Windows 10 1507 Windows 10 1607 Windows 10 1809 Windows 10 21h2 Windows 10 22h2 Windows 11 22h2 Windows 11 23h2 Windows 11 24h2 Windows Server 2008 Windows Server 2012 Windows Server 2016 Windows Server 2019 Windows Server 2022 Windows Server 2022 23h2 Windows Server 2025

7.8

CVSS 3.1

CVSS VectorNVD

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 18:41 vuln.today

Added to CISA KEV

Feb 13, 2026 - 21:37 cisa

CISA KEV

CVE Published

May 13, 2025 - 17:16 nvd

HIGH 7.8

DescriptionNVD

Null pointer dereference in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.

AnalysisAI

Windows Ancillary Function Driver for WinSock contains a use-after-free enabling local privilege escalation through a null pointer dereference, exploited in May 2025.

Technical ContextAI

The CWE-416 vulnerability in afd.sys causes a null pointer dereference condition that can be exploited for privilege escalation through controlled kernel memory access patterns.