CVE-2025-55339

Published: Oct 14, 2025Modified: Oct 27, 2025

7.8

Vector

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

Exploitability: 1.8 / Impact: 5.9

Source: secure@microsoft.com (Secondary)

Description

Out-of-bounds read in Windows NDIS allows an authorized attacker to elevate privileges locally.

Affected (7)

Products: Microsoft: Windows 11 22h2, Windows 11 23h2, Windows 11 24h2, Windows 11 25h2, Windows Server 2022, Windows Server 2022 23h2, Windows Server 2025

7 products

Windows 11 22h2

Windows 11 23h2

Windows 11 24h2

Windows 11 25h2

Windows Server 2022

Windows Server 2022 23h2

Windows Server 2025

Configuration A

7 vulnerable

Vulnerable Software	Affected Versions
Microsoft Windows 11 22h2	Before 10.0.22621.6060
Microsoft Windows 11 23h2	Before 10.0.22631.6060
Microsoft Windows 11 24h2	Before 10.0.26100.6899
Microsoft Windows 11 25h2	Before 10.0.26200.6899
Microsoft Windows Server 2022	Before 10.0.20348.4294
Microsoft Windows Server 2022 23h2	Before 10.0.25398.1913
Microsoft Windows Server 2025	Before 10.0.26100.6899

Related CWEs

Out-of-bounds Read

The product reads data past the end, or before the beginning, of the intended buffer.

References (1)

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-55339

Source: secure@microsoft.com

Vendor Advisory

Timeline

No history available yet.