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CVE-2023-29336: Win32k Elevation of Privilege Vulnerability

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: yes — in CISA KEV since 2023-05-09
• EPSS: 41.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2023-05-09 · updated 2026-06-17
• Weakness: CWE-416

Description

Win32k Elevation of Privilege Vulnerability

Affected products

• Microsoft Windows 10 Version 1507: before 10.0.10240.19926 — fixed in 10.0.10240.19926
• Microsoft Windows 10 1607: before 10.0.14393.5921 — fixed in 10.0.14393.5921
• Microsoft Windows Server 2008: r2-sp1
• Microsoft Windows Server 2012: r2
• Microsoft Windows Server 2016: all versions
• Microsoft Windows 10 Version 1507: from 10.0.10240.0 before 10.0.10240.19926 — fixed in 10.0.10240.19926
• Microsoft Windows 10 1607: from 10.0.14393.0 before 10.0.14393.5921 — fixed in 10.0.14393.5921
• Microsoft Windows Server 2008 R2 Service Pack 1: from 6.1.7601.0 before 6.1.7601.26519 — fixed in 6.1.7601.26519
• Microsoft Windows Server 2008 Service Pack 2: from 6.0.6003.0 before 6.0.6003.22070 — fixed in 6.0.6003.22070
• Microsoft Windows Server 2012: from 6.2.9200.0 before 6.2.9200.24266 — fixed in 6.2.9200.24266
• Microsoft Windows Server 2012 R2: from 6.3.9600.0 before 6.3.9600.20969 — fixed in 6.3.9600.20969
• Microsoft Windows Server 2016: from 10.0.14393.0 before 10.0.14393.5921 — fixed in 10.0.14393.5921

How to fix

Upgrade to a fixed version: Microsoft Windows 10 Version 1507 10.0.10240.19926; Microsoft Windows 10 1607 10.0.14393.5921; Microsoft Windows 10 Version 1507 10.0.10240.19926; Microsoft Windows 10 1607 10.0.14393.5921; Microsoft Windows Server 2008 R2 Service Pack 1 6.1.7601.26519; Microsoft Windows Server 2008 Service Pack 2 6.0.6003.22070; Microsoft Windows Server 2012 6.2.9200.24266; Microsoft Windows Server 2012 R2 6.3.9600.20969; Microsoft Windows Server 2016 10.0.14393.5921. Check the vendor advisory for mitigations.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-29336
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-29336
• https://www.exploit-db.com/exploits/52301
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-29336

Get alerted when CVE-2023-29336 or the next vulnerability affects your stack