CVE-2022-24521: Microsoft Windows CLFS Driver Privilege Escalation Vulnerability

CVE-2022-24521 · Severity: critical · CVSS 7.8 · Exploited in the wild · Published 2022-04-13

The Microsoft Windows Common Log File System (CLFS) Driver contains an elevation of privilege vulnerability, likely due to an out-of-bounds write. An attacker who successfully exploits this vulnerability could gain SYSTEM privileges on the affected host.

Technologies: Microsoft Windows. Vendors: Microsoft.

Quick answers

Is CVE-2022-24521 exploited in the wild?
Yes. CVE-2022-24521 is known to be exploited in the wild, first recorded on 13 April 2022. Treat it as urgent.
How severe is CVE-2022-24521?
Critical severity, with a CVSS score of 7.8, published 13 April 2022.
Which products and versions are affected?
Microsoft Windows 10 up to (excluding) 10.0.10240.19265, 10.0.14393.5066, 10.0.18363.2212, 10.0.19042.1645, 10.0.19043.1645, 10.0.19044.1645; Microsoft Windows 11 up to (excluding) 10.0.22000.613; Microsoft Windows Server 2022 up to (excluding) 10.0.20348.643; Microsoft Windows 7 SP1; and 5 more.
Is there a fix for CVE-2022-24521?
A patch was published on 2022-04-13. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2022-24521 attacked?
It is attacked with local access, in an operating system.
Am I affected by CVE-2022-24521?
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 up to (excluding) 10.0.10240.19265, 10.0.14393.5066, 10.0.18363.2212, 10.0.19042.1645, 10.0.19043.1645, 10.0.19044.1645
  • Microsoft Windows 11 up to (excluding) 10.0.22000.613
  • Microsoft Windows Server 2022 up to (excluding) 10.0.20348.643
  • 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

  • 2022-04-13: disclosed
  • 2022-04-13: patched
  • 2022-04-13: kev added: Added to CISA Known Exploited Vulnerabilities Catalog
  • 2022-04-13: exploited

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