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CVE-2025-24983: Windows Win32 Kernel Subsystem Elevation of Privilege Vulnerability

• Severity: high (CVSS 7.0 v3.1)
• Exploited in the wild: yes — in CISA KEV since 2025-03-11
• EPSS: 1.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-03-11 · updated 2026-06-17
• Weakness: CWE-416

Description

Use after free in Windows Win32 Kernel Subsystem allows an authorized attacker to elevate privileges locally.

Affected products

• Microsoft Windows 10 Version 1507: before 10.0.10240.20947 — fixed in 10.0.10240.20947
• Microsoft Windows 10 1607: before 10.0.14393.7876 — fixed in 10.0.14393.7876
• Microsoft Windows Server 2008: r2-sp1
• Microsoft Windows Server 2012: r2
• Microsoft Windows Server 2016: before 10.0.14393.7876 — fixed in 10.0.14393.7876
• Microsoft Windows 10 Version 1507: from 10.0.10240.0 before 10.0.10240.20947 — fixed in 10.0.10240.20947
• Microsoft Windows 10 1607: from 10.0.14393.0 before 10.0.14393.7876 — fixed in 10.0.14393.7876
• Microsoft Windows Server 2008 R2 Service Pack 1: from 6.1.7601.0 before 6.1.7601.27618 — fixed in 6.1.7601.27618
• Microsoft Windows Server 2008 Service Pack 2: from 6.0.6003.0 before 6.0.6003.23168 — fixed in 6.0.6003.23168
• Microsoft Windows Server 2012: from 6.2.9200.0 before 6.2.9200.25368 — fixed in 6.2.9200.25368
• Microsoft Windows Server 2012 R2: from 6.3.9600.0 before 6.3.9600.22470 — fixed in 6.3.9600.22470
• Microsoft Windows Server 2016: from 10.0.14393.0 before 10.0.14393.7876 — fixed in 10.0.14393.7876

How to fix

Upgrade to a fixed version: Microsoft Windows 10 Version 1507 10.0.10240.20947; Microsoft Windows 10 1607 10.0.14393.7876; Microsoft Windows Server 2016 10.0.14393.7876; Microsoft Windows 10 Version 1507 10.0.10240.20947; Microsoft Windows 10 1607 10.0.14393.7876; Microsoft Windows Server 2008 R2 Service Pack 1 6.1.7601.27618; Microsoft Windows Server 2008 Service Pack 2 6.0.6003.23168; Microsoft Windows Server 2012 6.2.9200.25368; Microsoft Windows Server 2012 R2 6.3.9600.22470; Microsoft Windows Server 2016 10.0.14393.7876. Check the vendor advisory for mitigations.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-24983
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-24983

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