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CVE record · CVE-2023-29336

Win32k Elevation of Privilege Vulnerability

CVSS 7.8 HighCriticalIn CISA KEVEPSS 0.41 · 98th percentile

Critical, because:

  • In CISA’s KEV catalogue since 9 May 2023: it is known to be exploited.
  • CVSS score 7.8 (7.0 or more) and EPSS 0.41 (0.1 or more): a high score and a real chance of exploitation in the next 30 days.

How we decide what’s critical

Published by the CVE Program (CNA: microsoft) at 9 May 2023, 17:03 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
VendorProductVersions
Microsoft Windows 10 Version 1507
  • affected 10.0.10240.0 to before 10.0.10240.19926 custom
Microsoft Windows 10 Version 1607
  • affected 10.0.14393.0 to before 10.0.14393.5921 custom
Microsoft Windows Server 2016
  • affected 10.0.14393.0 to before 10.0.14393.5921 custom
Microsoft Windows Server 2016 (Server Core installation)
  • affected 10.0.14393.0 to before 10.0.14393.5921 custom
Microsoft Windows Server 2008 Service Pack 2
  • affected 6.0.6003.0 to before 6.0.6003.22070 custom
Microsoft Windows Server 2008 Service Pack 2 (Server Core installation)
  • affected 6.0.6003.0 to before 6.0.6003.22070 custom
Microsoft Windows Server 2008 Service Pack 2
  • affected 6.0.6003.0 to before 6.0.6003.22070 custom
Microsoft Windows Server 2008 R2 Service Pack 1
  • affected 6.1.7601.0 to before 6.1.7601.26519 custom
Microsoft Windows Server 2008 R2 Service Pack 1 (Server Core installation)
  • affected 6.1.7601.0 to before 6.1.7601.26519 custom
Microsoft Windows Server 2012
  • affected 6.2.9200.0 to before 6.2.9200.24266 custom
Microsoft Windows Server 2012 (Server Core installation)
  • affected 6.2.9200.0 to before 6.2.9200.24266 custom
Microsoft Windows Server 2012 R2
  • affected 6.3.9600.0 to before 6.3.9600.20969 custom
Microsoft Windows Server 2012 R2 (Server Core installation)
  • affected 6.3.9600.0 to before 6.3.9600.20969 custom
Identifiers
CVE-2023-29336
CNA
microsoft
Weakness (CWE)
CWE-416
Tags
Published
9 May 2023
Updated
21 Oct 2025

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

ScoreRatingCVSSVectorSource
7.8 High 3.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C CNA (microsoft)
  • CISA KEV Listed since 9 May 2023: known to be exploited.
  • EPSS 0.41, the 98th percentile, on 10 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 9 May 2023. New records show when each source confirmed them.

Sources

References from the CNA

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.