CVE-2026-41089

Windows Netlogon Remote Code Execution Vulnerability

State: Published
Severity: 9.8 Critical
Published: May 12, 2026
Updated: Aug 10, 2026
Reserved: Apr 16, 2026

Description

Stack-based buffer overflow in Windows Netlogon allows an unauthorized attacker to execute code over a network.

Scores

CVSS	Score	Vector	Source
3.1	9.8 Critical	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C	microsoft

Weaknesses

CWE-121 Stack-based Buffer Overflow

Affected Products

Product	Versions
Windows Server 2012Microsoft	6.2.9200.0 to before 6.2.9200.26079Affected
Windows Server 2012 (Server Core installation)Microsoft	6.2.9200.0 to before 6.2.9200.26079Affected
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

Windows Netlogon Remote Code Execution Vulnerabilityvendor-advisorypatch

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