CVE-2026-41096

Published: May 12, 2026Modified: Jun 17, 2026

9.8

Vector

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

Exploitability: 3.9 / Impact: 5.9

Source: secure@microsoft.com (Secondary)

Description

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

Affected (10)

Products: Microsoft: Windows 11 23h2, Windows 11 24h2, Windows 11 25h2, Windows 11 26h1, Windows Server 2022 23h2, Windows Server 2025

6 products

Windows 11 23h2

Windows 11 24h2

Windows 11 25h2

Windows 11 26h1

Windows Server 2022 23h2

Windows Server 2025

Configuration A

10 vulnerable

Vulnerable Software	Affected Versions
Microsoft Windows 11 23h2	version < 10.0.22631.7079
Microsoft Windows 11 23h2	version < 10.0.22631.7079
Microsoft Windows 11 24h2	version < 10.0.26100.8390
Microsoft Windows 11 24h2	version < 10.0.26100.8390
Microsoft Windows 11 25h2	version < 10.0.26200.8390
Microsoft Windows 11 25h2	version < 10.0.26200.8390
Microsoft Windows 11 26h1	version < 10.0.28000.2113
Microsoft Windows 11 26h1	version < 10.0.28000.2113
Microsoft Windows Server 2022 23h2	version < 10.0.25398.2330
Microsoft Windows Server 2025	version < 10.0.26100.32772

Related CWEs

Heap-based Buffer Overflow

A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().

References (1)

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-41096

Source: secure@microsoft.com

Vendor Advisory

Timeline

No history available yet.