CVE-2025-55231

High

Description

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Storage allows an unauthorized attacker to execute code over a network.

SeverityHigh

CVSS7.5

Exploit probability—

Product

Microsoft Windows Server

PublishedAug 21, 2025

First seenAug 21, 2025

Weakness typeCWE-362Race condition

How to fix

Update

microsoft windows_server_201610.0.14393.8416 or later
microsoft windows_server_201910.0.17763.7783 or later
microsoft windows_server_202210.0.20348.4161 or later
microsoft windows_server_202510.0.26100.6563 or later

Patches

msrc.microsoft.com/update-guide/vulnerability/CVE-2025-55231

Affected products

Product	Affected versions	Fixed in
microsoft windows_server_2012	r2	—
microsoft windows_server_2016	v < 10.0.14393.8416	10.0.14393.8416
microsoft windows_server_2019	v < 10.0.17763.7783	10.0.17763.7783
microsoft windows_server_2022	v < 10.0.20348.4161	10.0.20348.4161
microsoft windows_server_2025	v < 10.0.26100.6563	10.0.26100.6563

Check your version

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