# CVE-2025-32706: Microsoft Windows Common Log File System (CLFS) Driver Heap-Based Buffer Overflow Vulnerability

Source: https://junglewise.ai/threats/cve-2025-32706-microsoft-windows-common-log-file-system-clfs-driver-heap-based  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2025-05-13. Updated: 2026-05-09  
License: CC BY 4.0 with a link back

CVE-2025-32706 · Severity: critical · CVSS 7.8 · Exploited in the wild · Published 2025-05-13

A heap-based buffer overflow vulnerability in the Microsoft Windows Common Log File System (CLFS) Driver allows a locally authenticated attacker to elevate privileges. The flaw stems from improper input validation within the driver and has been observed being exploited in the wild.

Technologies: [Microsoft Windows](https://junglewise.ai/threats/technologies/windows). Vendors: [Microsoft](https://junglewise.ai/threats/vendors/microsoft).

## Quick answers

**Is CVE-2025-32706 exploited in the wild?** Yes. CVE-2025-32706 is known to be exploited in the wild, first recorded on 13 May 2025. Treat it as urgent.

**How severe is CVE-2025-32706?** Critical severity, with a CVSS score of 7.8, published 13 May 2025.

**Which products and versions are affected?** Microsoft Windows 10 1507, 1607, 1809, 21H2, 22H2; Microsoft Windows 11 22H2, 23H2, 24H2; Microsoft Windows Server 2008, 2012 R2, 2016, 2019, 2022, 23H2, 2025.

**Is there a fix for CVE-2025-32706?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2025-32706 attacked?** It is attacked with local access, in an operating system.

**Am I affected by CVE-2025-32706?** Check whether you run Microsoft Windows. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- Microsoft Windows 10 1507, 1607, 1809, 21H2, 22H2
- Microsoft Windows 11 22H2, 23H2, 24H2
- Microsoft Windows Server 2008, 2012 R2, 2016, 2019, 2022, 23H2, 2025

## Timeline

- 2025-05-13: disclosed
- 2025-05-13: kev added: Added to CISA Known Exploited Vulnerabilities Catalog

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