Is CVE-2025-32709 actively exploited?

Yes. KEV Intelligence tracks CVE-2025-32709 as a known exploited vulnerability. Confidence is confirmed.

What exploitation activity has KEV Intelligence observed?

KEV Intelligence has not yet recorded sensor-observed exploitation attempts for CVE-2025-32709. Our sensors continue to monitor for activity targeting this CVE.

Which versions are affected?

CVE-2025-32709 affects Microsoft Windows 10 Version 1507 and 25 other products. KEV Intelligence lists 25 version rows; examples include 10.0.10240.0 to < 10.0.10240.21014, 10.0.14393.0 to < 10.0.14393.8066, and 10.0.17763.0 to < 10.0.17763.7314.

Yes. CVE-2025-32709 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog. KEV Intelligence attested it 377 days ahead of CISA.

CVE-2025-32709 Exploited in the Wild — Windows 10 Version 1507, Windows 10 Version 1607, Windows 10 Version 1809, Windows 10 Version 21H2, Windows 10 Version 22H2, Windows 11 version 22H2, Windows 11 version 22H3, Windows 11 Version 23H2, Windows 11 Version 24H2, Windows Server 2008 R2 Service Pack 1, Windows Server 2008 R2 Service Pack 1 (Server Core installation), Windows Server 2008 Service Pack 2, Windows Server 2008 Service Pack 2 (Server Core installation), Windows Server 2012, Windows Server 2012 (Server Core installation), Windows Server 2012 R2, Windows Server 2012 R2 (Server Core installation), Windows Server 2016, Windows Server 2016 (Server Core installation), Windows Server 2019, Windows Server 2019 (Server Core installation), Windows Server 2022, Windows Server 2022, 23H2 Edition (Server Core installation), Windows Server 2025, Windows Server 2025 (Server Core installation)

Q: What is CVE-2025-32709?

CVE-2025-32709 is a vulnerability affecting Microsoft Windows 10 Version 1507 and 25 other products. Null pointer dereference in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.

Q: How should organizations remediate it?

Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.

Q: Is it in CISA KEV?

Yes. CVE-2025-32709 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog. KEV Intelligence attested it 377 days ahead of CISA.

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2025-32709 is a vulnerability affecting Microsoft Windows 10 Version 1507 and 25 other products. Null pointer dereference in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate...

Is it exploited?

Yes. KEV Intelligence tracks this CVE as a known exploited vulnerability. Confidence is confirmed.

Who is affected?

Microsoft / Windows 10 Version 1507 affected before 10.0.10240.21014.

What should we do?

Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.

Overview

Windows 10 Version 1507

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

Vendor Product Affected Status

Microsoft Windows 10 Version 1507 Before 10.0.10240.21014 Affected

Microsoft Windows 10 Version 1607 Before 10.0.14393.8066 Affected

Microsoft Windows 10 Version 1809 Before 10.0.17763.7314 Affected

Microsoft Windows 10 Version 21H2 Before 10.0.19044.5854 Affected

Microsoft Windows 10 Version 22H2 Before 10.0.19045.5854 Affected

Microsoft Windows 11 version 22H2 Before 10.0.22621.5335 Affected

Microsoft Windows 11 version 22H3 Before 10.0.22631.5335 Affected

Microsoft Windows 11 Version 23H2 Before 10.0.22631.5335 Affected

Microsoft Windows 11 Version 24H2 Before 10.0.26100.4061 Affected

Microsoft Windows Server 2008 R2 Service Pack 1 Before 6.1.7601.27730 Affected

Microsoft Windows Server 2008 R2 Service Pack 1 (Server Core installation) Before 6.1.7601.27730 Affected

Microsoft Windows Server 2008 Service Pack 2 Before 6.0.6003.23317 Affected

Microsoft Windows Server 2008 Service Pack 2 (Server Core installation) Before 6.0.6003.23317 Affected

Microsoft Windows Server 2012 Before 6.2.9200.25475 Affected

Microsoft Windows Server 2012 (Server Core installation) Before 6.2.9200.25475 Affected

Microsoft Windows Server 2012 R2 Before 6.3.9600.22577 Affected

Microsoft Windows Server 2012 R2 (Server Core installation) Before 6.3.9600.22577 Affected

Microsoft Windows Server 2016 Before 10.0.14393.8066 Affected

Microsoft Windows Server 2016 (Server Core installation) Before 10.0.14393.8066 Affected

Microsoft Windows Server 2019 Before 10.0.17763.7314 Affected

Microsoft Windows Server 2019 (Server Core installation) Before 10.0.17763.7314 Affected

Microsoft Windows Server 2022 Before 10.0.20348.3692 Affected

Microsoft Windows Server 2022, 23H2 Edition (Server Core installation) Before 10.0.25398.1611 Affected

Microsoft Windows Server 2025 Before 10.0.26100.4061 Affected

Microsoft Windows Server 2025 (Server Core installation) Before 10.0.26100.4061 Affected

View vendor advisory

Published: 13 May 2025
Exploitation Reported: 21 May 2025
Attack vector: Local
Complexity: Low
Privileges: Low
User interaction: None

CVE References

CVE Record CVE.org · CVE Record https://www.cve.org/CVERecord?id=CVE-2025-32709
Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability msrc.microsoft.com · Vendor Advisory https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-32709

Exploitation evidence

Why KEV Intelligence marks this CVE as exploited

Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.

Exploited in the wild

CVE

Recorded 21 May 2025

Independent exploitation attestation added to the KEV Intelligence record.

Known exploited vulnerability sources

Per-source evidence links for KEV attestations are available through the KEV Intelligence Pro API.

Learn about Pro API access

Source	Added
CVE First	2025-05-21 13:11 UTC
CISA	2026-06-02 14:08 UTC
Tenable Blog	2026-08-11 18:04 UTC

Detection

Operational artifacts and observed signals

Make the evidence actionable in scanner, SOC, and edge-control workflows.

Observed signals

Request targets: 0
User-Agents: 0

Raw values available in Pro and Enterprise.

Scanner coverage

No scanner integrations recorded yet.

Virtual patch status

No KEV Intelligence virtual patch is currently available. Future rules ship for ModSecurity, Cloudflare, and AWS WAF.

Learn about virtual patches →

No detection artifacts or sensor request patterns are available for this CVE yet.

Check back as sensor telemetry and scanner integrations are updated.

Risk and context

Severity, weaknesses, and research context

CVSS v3.1

7.8 High

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

EPSS

1.8%

Weaknesses

Use After Free CWE-416

Recent mention · Tenable Blog

Microsoft's August 2026 Patch Tuesday addresses 398 CVEs (CVE-2026-68820)

42Critical355Important1Moderate0LowMicrosoft addresses 398 CVEs in the eighth Patch Tuesday of 2026, with three zero-days, including one that was exploited in the wild.Microsoft patched 398 CVEs in its August 2026 Patch Tuesday release, with 42 rated critical, 355 rated as...

Read full advisory

All Mentions

Recent mention · Tenable Blog

Microsoft's August 2026 Patch Tuesday addresses 398 CVEs (CVE-2026-68820)

Tenable Blog · 11 Aug 2026

42Critical355Important1Moderate0LowMicrosoft addresses 398 CVEs in the eighth Patch Tuesday of 2026, with three zero-days, including one that was exploited in the wild.Microsoft patched 398 CVEs in its August 2026 Patch Tuesday release, with 42 rated critical, 355 rated as important and one rated as moderate. Our counts omitted two CVEs assigned by MITRE; CVE-2026-6726 and CVE-2026-6727.This month’s update includes patches for:.NET.NET Core.NET FrameworkAMD ZenActive Directory Certificate Services (AD CS)Application Information ServicesAzure Active DirectoryAzure CycleCloudAzure Monitor...

Recent mention · Tenable Blog

Microsoft's August 2026 Patch Tuesday Addresses 398 CVEs (CVE-2026-68820)

Tenable Blog · 11 Aug 2026

42Critical355Important1Moderate0LowMicrosoft addresses 398 CVEs in the eighth Patch Tuesday of 2026, with three zero-days, including one that was exploited in the wild.Microsoft patched 398 CVEs in its August 2026 Patch Tuesday release, with 42 rated critical, 355 rated as important and one rated as moderate. Our counts omitted two CVEs assigned by MITRE; CVE-2026-6726 and CVE-2026-6727.This month’s update includes patches for:.NET.NET Core.NET FrameworkAMD ZenActive Directory Certificate Services (AD CS)Application Information ServicesAzure Active DirectoryAzure CycleCloudAzure Monitor...

Timeline

From disclosure to observed exploitation

11 Aug 2026
KEV confirmed by Tenable Blog

Exploitation attested by an external source
02 Jun 2026
Added to CISA KEV

Listed in the CISA Known Exploited Vulnerabilities catalog
21 May 2025
Added to KEV Intelligence KEV Feed

High-confidence, third-party attested exploitation
13 May 2025
CVE published

Vulnerability disclosed publicly
09 Apr 2025
CVE ID reserved

Identifier reserved by the CNA

Pro API

Automate this intelligence

Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.

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Evidence confidence and provenance
First-party sensor telemetry
PoC and scanner references
Affected versions and enrichment
Automation-ready JSON delivery

GET /api/v2/pro/kevs/CVE-2025-32709

Free JSON includes basic KEV fields

{
  "cve_id": "CVE-2025-32709",
  "confidence": "Confirmed",
  "cvss_score": 7.8,
  "cvss_estimated": false,
  "epss_score": 0.01759,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": false
  },
  "sensor_telemetry": { "attempts": 0, "sensors": 0 }
}

CVE-2025-32709

What security teams need to know first

Windows 10 Version 1507

Tags

CVE References

Why KEV Intelligence marks this CVE as exploited

Exploited in the wild

Known exploited vulnerability sources

Operational artifacts and observed signals

Observed signals

Scanner coverage

Virtual patch status

Severity, weaknesses, and research context

Weaknesses

Microsoft's August 2026 Patch Tuesday addresses 398 CVEs (CVE-2026-68820)

All Mentions

From disclosure to observed exploitation

KEV confirmed by Tenable Blog

Added to CISA KEV

Added to KEV Intelligence KEV Feed

CVE published

CVE ID reserved

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