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CVE-2023-28293: Windows Kernel Elevation of Privilege Vulnerability

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2023-04-11 · updated 2026-06-17
• Weakness: CWE-191

Description

Windows Kernel Elevation of Privilege Vulnerability

Affected products

• Microsoft Windows 10 1607: before 10.0.14393.5850 — fixed in 10.0.14393.5850
• Microsoft Windows 10: before 10.0.17763.4252 — fixed in 10.0.17763.4252
• Microsoft Windows 10 20H2: before 10.0.19042.2846 — fixed in 10.0.19042.2846
• Microsoft Windows 10: before 10.0.19044.2846 — fixed in 10.0.19044.2846
• Microsoft Windows 10: before 10.0.19045.2846 — fixed in 10.0.19045.2846
• Microsoft Windows 11 21H2: before 10.0.22621.1555 — fixed in 10.0.22621.1555
• Microsoft Windows 11: before 10.0.22621.1555 — fixed in 10.0.22621.1555
• Microsoft Windows Server 2008: r2-sp1
• Microsoft Windows Server 2012: r2
• Microsoft Windows Server 2016: all versions
• Microsoft Windows Server 2019: all versions
• Microsoft Windows Server 2022: all versions
• Microsoft Windows 10 Version 1507: from 10.0.10240.0 before 10.0.10240.19869 — fixed in 10.0.10240.19869
• Microsoft Windows 10 1607: from 10.0.14393.0 before 10.0.14393.5850 — fixed in 10.0.14393.5850
• Microsoft Windows 10: from 10.0.17763.0 before 10.0.17763.4252 — fixed in 10.0.17763.4252
• Microsoft Windows 10 20H2: from 10.0.0 before 10.0.19042.2846 — fixed in 10.0.19042.2846
• Microsoft Windows 10: from 10.0.19043.0 before 10.0.19044.2846 — fixed in 10.0.19044.2846
• Microsoft Windows 10: from 10.0.19045.0 before 10.0.19045.2846 — fixed in 10.0.19045.2846
• Microsoft Windows 11 21H2: from 10.0.0 before 10.0.22000.1817 — fixed in 10.0.22000.1817
• Microsoft Windows 11: from 10.0.22621.0 before 10.0.22621.1555 — fixed in 10.0.22621.1555
• Microsoft Windows Server 2008 R2 Service Pack 1: from 6.1.7601.0 before 6.1.7601.26466 — fixed in 6.1.7601.26466
• Microsoft Windows Server 2008 Service Pack 2: from 6.0.6003.0 before 6.0.6003.22015 — fixed in 6.0.6003.22015
• Microsoft Windows Server 2012: from 6.2.9200.0 before 6.2.9200.24216 — fixed in 6.2.9200.24216
• Microsoft Windows Server 2012 R2: from 6.3.9600.0 before 6.3.9600.20919 — fixed in 6.3.9600.20919
• Microsoft Windows Server 2016: from 10.0.14393.0 before 10.0.14393.5850 — fixed in 10.0.14393.5850
• Microsoft Windows Server 2019: from 10.0.17763.0 before 10.0.17763.4252 — fixed in 10.0.17763.4252
• Microsoft Windows Server 2022: from 10.0.20348.0 before 10.0.20348.1668 — fixed in 10.0.20348.1668

How to fix

Upgrade to a fixed version: Microsoft Windows 10 1607 10.0.14393.5850; Microsoft Windows 10 10.0.17763.4252; Microsoft Windows 10 20H2 10.0.19042.2846; Microsoft Windows 10 10.0.19044.2846; Microsoft Windows 10 10.0.19045.2846; Microsoft Windows 11 21H2 10.0.22621.1555; Microsoft Windows 11 10.0.22621.1555; Microsoft Windows 10 Version 1507 10.0.10240.19869; Microsoft Windows 10 1607 10.0.14393.5850; Microsoft Windows 10 10.0.17763.4252; Microsoft Windows 10 20H2 10.0.19042.2846; Microsoft Windows 10 10.0.19044.2846. Check the vendor advisory for mitigations.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-28293
• http://packetstormsecurity.com/files/173135/Microsoft-Windows-11-22h2-Kernel-Privilege-Escalation.html
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-28293

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