CVE-2025-54915

Windows Defender Firewall Service Elevation of Privilege Vulnerability

State: Published
Severity: 6.7 Medium
Published: Sep 9, 2025
Updated: Feb 20, 2026
Reserved: Jul 31, 2025

Description

Access of resource using incompatible type ('type confusion') in Windows Defender Firewall Service allows an authorized attacker to elevate privileges locally.

Scores

CVSS	Score	Vector	Source
3.1	6.7 Medium	CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C	microsoft

Weaknesses

CWE-843 Access of Resource Using Incompatible Type ('Type Confusion')

Affected Products

Product	Versions
Windows 10 Version 1507Microsoft	10.0.10240.0 to before 10.0.10240.21128Affected
Windows 10 Version 1607Microsoft	10.0.14393.0 to before 10.0.14393.8422Affected
Windows 10 Version 1809Microsoft	10.0.17763.0 to before 10.0.17763.7792Affected
Windows 10 Version 21H2Microsoft	10.0.19044.0 to before 10.0.19044.6332Affected
Windows 10 Version 22H2Microsoft	10.0.19045.0 to before 10.0.19045.6332Affected
Windows 11 version 22H2Microsoft	10.0.22621.0 to before 10.0.22621.5909Affected
Windows 11 version 22H3Microsoft	10.0.22631.0 to before 10.0.22631.5909Affected
Windows 11 Version 23H2Microsoft	10.0.22631.0 to before 10.0.22631.5909Affected
Windows 11 Version 24H2Microsoft	10.0.26100.0 to before 10.0.26100.6584Affected
Windows Server 2008 R2 Service Pack 1Microsoft	6.1.7601.0 to before 6.1.7601.27929Affected
Windows Server 2008 R2 Service Pack 1 (Server Core installation)Microsoft	6.1.7601.0 to before 6.1.7601.27929Affected
Windows Server 2008 Service Pack 2Microsoft	6.0.6003.0 to before 6.0.6003.23529Affected
Windows Server 2008 Service Pack 2 (Server Core installation)Microsoft	6.0.6003.0 to before 6.0.6003.23529Affected
Windows Server 2012Microsoft	6.2.9200.0 to before 6.2.9200.25675Affected
Windows Server 2012 (Server Core installation)Microsoft	6.2.9200.0 to before 6.2.9200.25675Affected
Windows Server 2012 R2Microsoft	6.3.9600.0 to before 6.3.9600.22774Affected
Windows Server 2012 R2 (Server Core installation)Microsoft	6.3.9600.0 to before 6.3.9600.22774Affected
Windows Server 2016Microsoft	10.0.14393.0 to before 10.0.14393.8422Affected
Windows Server 2016 (Server Core installation)Microsoft	10.0.14393.0 to before 10.0.14393.8422Affected
Windows Server 2019Microsoft	10.0.17763.0 to before 10.0.17763.7792Affected
Windows Server 2019 (Server Core installation)Microsoft	10.0.17763.0 to before 10.0.17763.7792Affected
Windows Server 2022Microsoft	10.0.20348.0 to before 10.0.20348.4171Affected
Windows Server 2022, 23H2 Edition (Server Core installation)Microsoft	10.0.25398.0 to before 10.0.25398.1849Affected
Windows Server 2025Microsoft	10.0.26100.0 to before 10.0.26100.6584Affected
Windows Server 2025 (Server Core installation)Microsoft	10.0.26100.0 to before 10.0.26100.6584Affected

References

Windows Defender Firewall Service Elevation of Privilege Vulnerabilityvendor-advisorypatch

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