What is CVE-2026-70167?

CVE-2026-70167 is a high-severity vulnerability in Microsoft Windows Server 2022, classified under Untrusted Pointer Dereference. CVSS score: 8.8/10. Published 2026-10-13.

How severe is CVE-2026-70167?

High severity. CVSS v3 base score is 8.8 out of 10.

Vulnerability in Microsoft Windows Server 2022

CVE-2026-70167

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

Published 2026-10-13 · last modified 2026-10-13.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Microsoft Windows Server 2022
Microsoft Windows Server 2025
Microsoft Windows Server 2025 (Server Core Installation)

Weakness classification (CWE)

CWE-822 — Untrusted Pointer Dereference
CWE-843 — Access of Resource Using Incompatible Type (Type Confusion)

References

Windows Domain Name Service Remote Code Execution Vulnerability (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-70167?: CVE-2026-70167 is a high-severity vulnerability in Microsoft Windows Server 2022, classified under Untrusted Pointer Dereference. CVSS score: 8.8/10. Published 2026-10-13.
How severe is CVE-2026-70167?: High severity. CVSS v3 base score is 8.8 out of 10.