CVE-2026-73025

Published: Sep 8, 2026Modified: Sep 24, 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

Weak authentication in Windows iSCSI allows an unauthorized attacker to bypass a security feature over a network.

Affected (10)

Products: Microsoft: Windows 10 1607, Windows 10 1809, Windows Server 2012, Windows Server 2016, Windows Server 2019, Windows Server 2022, Windows Server 2025

7 products

Windows 10 1607

Windows 10 1809

Windows Server 2012

Windows Server 2016

Windows Server 2019

Windows Server 2022

Windows Server 2025

Configuration A

10 vulnerable

Vulnerable Software	Affected Versions
Microsoft Windows 10 1607	version < 10.0.14393.9512
Microsoft Windows 10 1607	version < 10.0.14393.9512
Microsoft Windows 10 1809	version < 10.0.17763.9245
Microsoft Windows 10 1809	version < 10.0.17763.9245
Microsoft Windows Server 2012	All versions
Microsoft Windows Server 2012	Version r2
Microsoft Windows Server 2016	version < 10.0.14393.9512
Microsoft Windows Server 2019	version < 10.0.17763.9245
Microsoft Windows Server 2022	version < 10.0.20348.5622
Microsoft Windows Server 2025	version < 10.0.26100.33438

Related CWEs

Weak Authentication

The product uses an authentication mechanism to restrict access to specific users or identities, but the mechanism does not sufficiently prove that the claimed identity is correct.

References (1)

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-73025

Source: secure@microsoft.com

PatchVendor Advisory

Timeline

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