CVE-2026-41095

Data Deduplication Elevation of Privilege Vulnerability

State: Published
Severity: 7.8 High
Published: May 12, 2026
Updated: Aug 10, 2026
Reserved: Apr 16, 2026

Description

Use after free in Data Deduplication 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-416 Use After Free

Affected Products

Product	Versions
Windows Server 2012 R2Microsoft	6.3.9600.0 to before 6.3.9600.23181Affected
Windows Server 2012 R2 (Server Core installation)Microsoft	6.3.9600.0 to before 6.3.9600.23181Affected
Windows Server 2016Microsoft	10.0.14393.0 to before 10.0.14393.9140Affected
Windows Server 2016 (Server Core installation)Microsoft	10.0.14393.0 to before 10.0.14393.9140Affected
Windows Server 2019Microsoft	10.0.17763.0 to before 10.0.17763.8755Affected
Windows Server 2019 (Server Core installation)Microsoft	10.0.17763.0 to before 10.0.17763.8755Affected
Windows Server 2022Microsoft	10.0.20348.0 to before 10.0.20348.5139Affected
Windows Server 2022, 23H2 Edition (Server Core installation)Microsoft	10.0.25398.0 to before 10.0.25398.2330Affected
Windows Server 2025Microsoft	10.0.26100.0 to before 10.0.26100.32860Affected
Windows Server 2025 (Server Core installation)Microsoft	10.0.26100.0 to before 10.0.26100.32860Affected

References

Data Deduplication Elevation of Privilege Vulnerabilityvendor-advisorypatch

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