CVE-2023-29336: Microsoft Win32K Privilege Escalation Vulnerability

CVE-2023-29336 · Severity: critical · CVSS 7.8 · Exploited in the wild · Published 2023-05-09

A use-after-free vulnerability in the Microsoft Win32k kernel-mode driver allows a local attacker to gain SYSTEM privileges. The flaw is actively exploited in the wild and stems from improper memory management within the Win32k component.

Technologies: Microsoft Win32K. Vendors: Microsoft.

Quick answers

Is CVE-2023-29336 exploited in the wild?
Yes. CVE-2023-29336 is known to be exploited in the wild, first recorded on 9 May 2023. Treat it as urgent.
How severe is CVE-2023-29336?
Critical severity, with a CVSS score of 7.8, published 9 May 2023.
Which products and versions are affected?
Microsoft Windows 10 1507, 1607; Microsoft Windows Server 2008 SP2, R2 SP1; Microsoft Windows Server 2012 R2; Microsoft Windows Server 2016.
Is there a fix for CVE-2023-29336?
A patch was published on 2023-05-09. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2023-29336 attacked?
It is attacked with local access, in an operating system.
Am I affected by CVE-2023-29336?
Check whether you run Microsoft Win32K. 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
  • Microsoft Windows Server 2008 SP2, R2 SP1
  • Microsoft Windows Server 2012 R2
  • Microsoft Windows Server 2016

Timeline

  • 2023-05-09: disclosed
  • 2023-05-09: patched
  • 2023-05-09: kev added: Added to CISA Known Exploited Vulnerabilities Catalog
  • 2023-05-09: exploited

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