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CVE-2025-55231: Windows Storage-based Management Service Remote Code Execution Vulnerability

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-08-21 · updated 2026-06-17
• Weakness: CWE-362

Description

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

Affected products

• Microsoft Windows Server 2012: r2
• Microsoft Windows Server 2016: before 10.0.14393.8416 — fixed in 10.0.14393.8416
• Microsoft Windows Server 2019: before 10.0.17763.7783 — fixed in 10.0.17763.7783
• Microsoft Windows Server 2022: before 10.0.20348.4161 — fixed in 10.0.20348.4161
• Microsoft Windows Server 2025: before 10.0.26100.6563 — fixed in 10.0.26100.6563
• Microsoft Windows Server 2012 R2: from 6.3.9600.0 before 6.3.9600.22676 — fixed in 6.3.9600.22676
• Microsoft Windows Server 2016: from 10.0.14393.0 before 10.0.14393.8246 — fixed in 10.0.14393.8246
• Microsoft Windows Server 2019: from 10.0.17763.0 before 10.0.17763.7558 — fixed in 10.0.17763.7558
• Microsoft Windows Server 2022: from 10.0.20348.0 before 10.0.20348.3932 — fixed in 10.0.20348.3932
• Microsoft Windows Server 2025: from 10.0.26100.0 before 10.0.26100.4652 — fixed in 10.0.26100.4652

How to fix

Upgrade to a fixed version: Microsoft Windows Server 2016 10.0.14393.8416; Microsoft Windows Server 2019 10.0.17763.7783; Microsoft Windows Server 2022 10.0.20348.4161; Microsoft Windows Server 2025 10.0.26100.6563; Microsoft Windows Server 2012 R2 6.3.9600.22676; Microsoft Windows Server 2016 10.0.14393.8246; Microsoft Windows Server 2019 10.0.17763.7558; Microsoft Windows Server 2022 10.0.20348.3932; Microsoft Windows Server 2025 10.0.26100.4652. Check the vendor advisory for mitigations.

References

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

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