CVE-2025-59514

Microsoft Streaming Service Proxy Elevation of Privilege Vulnerability

State: Published
Severity: 7.8 High
Published: Nov 11, 2025
Updated: Feb 26, 2026
Reserved: Sep 17, 2025

Description

Improper privilege management in Microsoft Streaming Service allows an authorized attacker to elevate privileges locally.

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	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	microsoft

Weaknesses

CWE-269 Improper Privilege Management

Affected Products

Product	Versions
Windows 10 Version 1607Microsoft	10.0.14393.0 to before 10.0.14393.8594Affected
Windows 10 Version 1809Microsoft	10.0.17763.0 to before 10.0.17763.8027Affected
Windows 10 Version 21H2Microsoft	10.0.19044.0 to before 10.0.19044.6575Affected
Windows 10 Version 22H2Microsoft	10.0.19045.0 to before 10.0.19045.6575Affected
Windows 11 version 22H3Microsoft	10.0.22631.0 to before 10.0.22631.6199Affected
Windows 11 Version 23H2Microsoft	10.0.22631.0 to before 10.0.22631.6199Affected
Windows 11 Version 24H2Microsoft	10.0.26100.0 to before 10.0.26100.7171Affected
Windows 11 Version 25H2Microsoft	10.0.26200.0 to before 10.0.26200.7171Affected
Windows Server 2008 R2 Service Pack 1Microsoft	6.1.7601.0 to before 6.1.7601.28021Affected
Windows Server 2008 R2 Service Pack 1 (Server Core installation)Microsoft	6.1.7601.0 to before 6.1.7601.28021Affected
Windows Server 2008 Service Pack 2Microsoft	6.0.6003.0 to before 6.0.6003.23624Affected
Windows Server 2008 Service Pack 2 (Server Core installation)Microsoft	6.0.6003.0 to before 6.0.6003.23624Affected
Windows Server 2012Microsoft	6.2.9200.0 to before 6.2.9200.25768Affected
Windows Server 2012 (Server Core installation)Microsoft	6.2.9200.0 to before 6.2.9200.25768Affected
Windows Server 2012 R2Microsoft	6.3.9600.0 to before 6.3.9600.22869Affected
Windows Server 2012 R2 (Server Core installation)Microsoft	6.3.9600.0 to before 6.3.9600.22869Affected
Windows Server 2016Microsoft	10.0.14393.0 to before 10.0.14393.8594Affected
Windows Server 2016 (Server Core installation)Microsoft	10.0.14393.0 to before 10.0.14393.8594Affected
Windows Server 2019Microsoft	10.0.17763.0 to before 10.0.17763.8027Affected
Windows Server 2019 (Server Core installation)Microsoft	10.0.17763.0 to before 10.0.17763.8027Affected
Windows Server 2022Microsoft	10.0.20348.0 to before 10.0.20348.4405Affected
Windows Server 2022, 23H2 Edition (Server Core installation)Microsoft	10.0.25398.0 to before 10.0.25398.1965Affected
Windows Server 2025Microsoft	10.0.26100.0 to before 10.0.26100.7171Affected
Windows Server 2025 (Server Core installation)Microsoft	10.0.26100.0 to before 10.0.26100.7171Affected

References

Microsoft Streaming Service Proxy Elevation of Privilege Vulnerabilityvendor-advisorypatch

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