CVE-2026-69876

Windows DHCP Server Remote Code Execution Vulnerability

State: Published
Severity: 8.0 High
Published: Sep 8, 2026
Updated: Oct 31, 2026
Reserved: Aug 3, 2026

Description

Use after free in Windows DHCP Server allows an authorized attacker to execute code over an adjacent network.

Scores

CVSS	Score	Vector	Source
3.1	8.0 High	CVSS:3.1/AV:A/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
CWE-415 Double Free

Affected Products

Product	Versions
Windows 10 Version 1607Microsoft	10.0.14393.0 to before 10.0.14393.9512Affected
Windows 10 Version 1809Microsoft	10.0.17763.0 to before 10.0.17763.9245Affected
Windows Server 2012Microsoft	6.2.9200.0 to before 6.2.9200.26349Affected
Windows Server 2012 (Server Core installation)Microsoft	6.2.9200.0 to before 6.2.9200.26349Affected
Windows Server 2012 R2Microsoft	6.3.9600.0 to before 6.3.9600.23398Affected
Windows Server 2012 R2 (Server Core installation)Microsoft	6.3.9600.0 to before 6.3.9600.23398Affected
Windows Server 2016Microsoft	10.0.14393.0 to before 10.0.14393.9512Affected
Windows Server 2016 (Server Core installation)Microsoft	10.0.14393.0 to before 10.0.14393.9512Affected
Windows Server 2019Microsoft	10.0.17763.0 to before 10.0.17763.9245Affected
Windows Server 2019 (Server Core installation)Microsoft	10.0.17763.0 to before 10.0.17763.9245Affected
Windows Server 2022Microsoft	10.0.20348.0 to before 10.0.20348.5622Affected
Windows Server 2025Microsoft	10.0.26100.0 to before 10.0.26100.33438Affected
Windows Server 2025 (Server Core installation)Microsoft	10.0.26100.0 to before 10.0.26100.33438Affected

References

Windows DHCP Server Remote Code Execution Vulnerabilityvendor-advisorypatch

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