CVE-2026-70167

Windows Domain Name Service Remote Code Execution Vulnerability

State: Published
Severity: 8.8 High
Published: Oct 13, 2026
Updated: Oct 31, 2026
Reserved: Aug 3, 2026

Description

Access of resource using incompatible type ('type confusion') in DNS Server allows an authorized attacker to execute code over a network.

Scores

CVSS	Score	Vector	Source
3.1	8.8 High	CVSS:3.1/AV:N/AC:L/PR:L/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')
CWE-822 Untrusted Pointer Dereference

Affected Products

Product	Versions
Windows Server 2022Microsoft	10.0.20348.0 to before 10.0.20348.5761Affected
Windows Server 2025Microsoft	10.0.26100.0 to before 10.0.26100.33650Affected
Windows Server 2025 (Server Core installation)Microsoft	10.0.26100.0 to before 10.0.26100.33650Affected

References

Windows Domain Name Service Remote Code Execution Vulnerabilityvendor-advisorypatch

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