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CVE-2026-81384

HighCVSS 8.1/10Last modified Nov 10, 2026

Description

Heap-based buffer overflow in DNS Server allows an unauthorized attacker to execute code over a network.

Metrics

CVSS 3.1 8.1/10CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

Vendor	Product	Versions
Microsoft	Windows Server 2022	>= 10.0.20348.0, < 10.0.20348.5870
Microsoft	Windows Server 2025	>= 10.0.26100.0, < 10.0.26100.33822
Microsoft	Windows Server 2025 (Server Core installation)	>= 10.0.26100.0, < 10.0.26100.33822

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-81384

Timeline

Published: Nov 10, 2026
Last modified: Nov 10, 2026
NVD status: Awaiting Analysis

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CVE-2026-81384: High severity, CVSS 8.1 | Vulnix