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CVE-2025-21174: Windows Standards-Based Storage Management Service Denial of Service Vulnerability
- Severity: high (CVSS 7.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 2.1% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2025-04-08 · updated 2026-08-10
- Weakness: CWE-400
Description
Uncontrolled resource consumption in Windows Standards-Based Storage Management Service allows an unauthorized attacker to deny service over a network.
Affected products
- Microsoft Windows Server 2012: r2
- Microsoft Windows Server 2016: before 10.0.14393.7969 — fixed in 10.0.14393.7969
- Microsoft Windows Server 2019: before 10.0.17763.7136 — fixed in 10.0.17763.7136
- Microsoft Windows Server 2022: before 10.0.20348.3453 — fixed in 10.0.20348.3453
- Microsoft Windows Server 2025: before 10.0.26100.3775 — fixed in 10.0.26100.3775
- Microsoft Windows Server 2012 R2: from 6.3.9600.0 before 6.3.9600.22523 — fixed in 6.3.9600.22523
- Microsoft Windows Server 2016: from 10.0.14393.0 before 10.0.14393.7969 — fixed in 10.0.14393.7969
- Microsoft Windows Server 2019: from 10.0.17763.0 before 10.0.17763.7136 — fixed in 10.0.17763.7136
- Microsoft Windows Server 2022: from 10.0.20348.0 before 10.0.20348.3453 — fixed in 10.0.20348.3453
- Microsoft Windows Server 2025: from 10.0.26100.0 before 10.0.26100.3775 — fixed in 10.0.26100.3775
How to fix
Upgrade to a fixed version: Microsoft Windows Server 2016 10.0.14393.7969; Microsoft Windows Server 2019 10.0.17763.7136; Microsoft Windows Server 2022 10.0.20348.3453; Microsoft Windows Server 2025 10.0.26100.3775; Microsoft Windows Server 2012 R2 6.3.9600.22523; Microsoft Windows Server 2016 10.0.14393.7969; Microsoft Windows Server 2019 10.0.17763.7136; Microsoft Windows Server 2022 10.0.20348.3453; Microsoft Windows Server 2025 10.0.26100.3775. Check the vendor advisory for mitigations.
References
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