CVE-2026-50444

Published: Jul 14, 2026Modified: Jul 21, 2026

8.8

Vector

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

Exploitability: 2.8 / Impact: 5.9

Source: secure@microsoft.com (Secondary)

Description

Missing authentication for critical function in Windows Server Update Service allows an authorized attacker to elevate privileges 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	Before 10.0.14393.9339
Microsoft Windows 10 1607	Before 10.0.14393.9339
Microsoft Windows 10 1809	Before 10.0.17763.9020
Microsoft Windows 10 1809	Before 10.0.17763.9020
Microsoft Windows Server 2012	All versions
Microsoft Windows Server 2012	Version r2
Microsoft Windows Server 2016	Before 10.0.14393.9339
Microsoft Windows Server 2019	Before 10.0.17763.9020
Microsoft Windows Server 2022	Before 10.0.20348.5386
Microsoft Windows Server 2025	Before 10.0.26100.33158

Related CWEs

Missing Authentication for Critical Function

The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.

References (1)

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50444

Source: secure@microsoft.com

PatchVendor Advisory

Timeline

No history available yet.