CVE-2025-55231

highpriority · track · 0EPSS 0.005 · 42 %ileDEEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.50% (42nd) EPSS

CVSS 7.5 · high

Is it mine?

35 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · cert_bund · msrc_csaf

EPSS · scored 2026-10-27

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

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

FixedWindows Server 2012 R2msrc_csaf
6.3.9600.22676:Monthly Rollup:https://support.microsoft.com/help/5062597
https://support.microsoft.com/help/5062597
FixedWindows Server 2012 R2 (Server Core installation)msrc_csaf
6.3.9600.22676:Monthly Rollup:https://support.microsoft.com/help/5062597
https://support.microsoft.com/help/5062597
FixedWindows Server 2016msrc_csaf
10.0.14393.8246:Security Update:https://support.microsoft.com/help/5062560
https://support.microsoft.com/help/5062560
FixedWindows Server 2016 (Server Core installation)msrc_csaf
10.0.14393.8246:Security Update:https://support.microsoft.com/help/5062560
https://support.microsoft.com/help/5062560
FixedWindows Server 2019msrc_csaf
10.0.17763.7558:Security Update:https://support.microsoft.com/help/5062557
https://support.microsoft.com/help/5062557
FixedWindows Server 2019 (Server Core installation)msrc_csaf
10.0.17763.7558:Security Update:https://support.microsoft.com/help/5062557
https://support.microsoft.com/help/5062557
FixedWindows Server 2022msrc_csaf
10.0.20348.3932:Security Update:https://support.microsoft.com/help/5062572
https://support.microsoft.com/help/5062572
FixedWindows Server 2022 (Server Core installation)msrc_csaf
10.0.20348.3932:Security Update:https://support.microsoft.com/help/5062572
https://support.microsoft.com/help/5062572
FixedWindows Server 2025msrc_csaf
10.0.26100.4652:Security Update:https://support.microsoft.com/help/5062553
https://support.microsoft.com/help/5062553
FixedWindows Server 2025 (Server Core installation)msrc_csaf
10.0.26100.4652:Security Update:https://support.microsoft.com/help/5062553
https://support.microsoft.com/help/5062553

cvss

Technical severity, 0–10. One row per scoring source.

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.9–7.5

v3.17.5highCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:Csecondary · ENISA EU

v3.17.5highCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:Hsecondary · secure@microsoft.com USexploitability 1.6 · impact 5.9

v3.16.9mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

v3.17.5highCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:Csecondary · Microsoft Security Response Center US

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-362USCWE-362US

affected products (35)

Products and version ranges known to be affected.

Microsoft Windowsall versionscert_bundDEcpe:/o:microsoft:windows:-
Microsoft Windows Server 2012 R26.3.9600.0 → 6.3.9600.22676enisa_euvdEU
Microsoft Windows Server 2012 R2 (Server Core installation)6.3.9600.0 → 6.3.9600.22676enisa_euvdEU
Microsoft Windows Server 201610.0.14393.0 → 10.0.14393.8246enisa_euvdEU
Microsoft Windows Server 2016 (Server Core installation)10.0.14393.0 → 10.0.14393.8246enisa_euvdEU
Microsoft Windows Server 201910.0.17763.0 → 10.0.17763.7558enisa_euvdEU
Microsoft Windows Server 2019 (Server Core installation)10.0.17763.0 → 10.0.17763.7558enisa_euvdEU
Microsoft Windows Server 202210.0.20348.0 → 10.0.20348.3932enisa_euvdEU
Microsoft Windows Server 202510.0.26100.0 → 10.0.26100.4652enisa_euvdEU
Microsoft Windows Server 2025 (Server Core installation)10.0.26100.0 → 10.0.26100.4652enisa_euvdEU
Windows Server 2012 R2all versionsfixedmsrc_csafUS
Windows Server 2012 R2< 6.3.9600.22676msrc_csafUS
Windows Server 2012 R2 (Server Core installation)all versionsfixedmsrc_csafUS
Windows Server 2012 R2 (Server Core installation)< 6.3.9600.22676msrc_csafUS
Windows Server 2016all versionsfixedmsrc_csafUS
Windows Server 2016< 10.0.14393.8246msrc_csafUS
Windows Server 2016 (Server Core installation)all versionsfixedmsrc_csafUS
Windows Server 2016 (Server Core installation)< 10.0.14393.8246msrc_csafUS
Windows Server 2019all versionsfixedmsrc_csafUS
Windows Server 2019< 10.0.17763.7558msrc_csafUS

showing 20 of 35

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2025-1891Microsoft Windows: Mehrere SchwachstellenDeutsch2025-08-21csaf · cert_bundDE
Ein entfernter anonymer Angreifer oder ein lokaler Angreifer kann mehrere Schwachstellen in Microsoft Windows ausnutzen, um Spoofing-Angriffe durchzuführen, Root-Rechte zu erlangen und beliebigen Code auszuführen.
msrc_CVE-2025-55231Windows Storage-based Management Service Remote Code Execution Vulnerability2025-08-12csaf · msrc_csafUS
To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund msrc_csaf NVD CVE.org MITRE

published 2025-08-21modified 2026-06-17

references (4)

External citations — patches, advisories, analysis.

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.

Free scan