# CVE-2022-37969: Microsoft Windows Common Log File System (CLFS) Driver Privilege Escalation Vulnerability

Source: https://junglewise.ai/threats/cve-2022-37969-microsoft-windows-common-log-file-system-clfs-driver-privilege  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2022-09-14. Updated: 2026-05-10  
License: CC BY 4.0 with a link back

CVE-2022-37969 · Severity: critical · CVSS 7.8 · Exploited in the wild · Published 2022-09-14

An out-of-bounds write vulnerability in the Microsoft Windows Common Log File System (CLFS) driver allows a local attacker to gain SYSTEM privileges. The flaw exists in how the driver handles objects in memory, leading to an elevation of privilege.

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

## Quick answers

**Is CVE-2022-37969 exploited in the wild?** Yes. CVE-2022-37969 is known to be exploited in the wild, first recorded on 14 September 2022. Treat it as urgent.

**How severe is CVE-2022-37969?** Critical severity, with a CVSS score of 7.8, published 14 September 2022.

**Which products and versions are affected?** Microsoft Windows 10 versions up to (excluding) 10.0.10240.19444; Microsoft Windows 11 versions up to (excluding) 10.0.22000.978; Microsoft Windows Server 2022 versions up to (excluding) 10.0.20348.1006; Microsoft Windows 7 SP1; and 5 more.

**Is there a fix for CVE-2022-37969?** A patch was published on 2022-09-14T00:00:00+00:00: Microsoft released security updates to address this vulnerability. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2022-37969 attacked?** It is attacked with local access, in an operating system.

**Am I affected by CVE-2022-37969?** 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 versions up to (excluding) 10.0.10240.19444
- Microsoft Windows 11 versions up to (excluding) 10.0.22000.978
- Microsoft Windows Server 2022 versions up to (excluding) 10.0.20348.1006
- Microsoft Windows 7 SP1
- Microsoft Windows 8.1
- Microsoft Windows Server 2008 SP2, R2 SP1
- Microsoft Windows Server 2012 R2
- Microsoft Windows Server 2016
- Microsoft Windows Server 2019

## Timeline

- 2022-09-14: disclosed
- 2022-09-14: kev added: Added to CISA Known Exploited Vulnerabilities Catalog
- 2022-09-14: patched: Microsoft released security updates to address this vulnerability.

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