CVE tracker / CVE-2025-21174
CVE-2025-21174
CVE-2025-21174 is the Windows Standards-Based Storage Management Service Denial of Service Vulnerability. Microsoft rates it Important, CVSS 7.5. It is not in CISA's Known Exploited Vulnerabilities catalog. Published April 8, 2025.
Risk summary
Microsoft describes it: “Uncontrolled resource consumption in Windows Standards-Based Storage Management Service allows an unauthorized attacker to deny service over a network.”
How to fix it
Microsoft lists 10 affected products and the update that fixes each:
- KB5055519 · fixed build 10.0.17763.7136
Windows Server 2019 (Server Core installation), Windows Server 2019 - KB5055521 · fixed build 10.0.14393.7969
Windows Server 2016 (Server Core installation), Windows Server 2016 - KB5055523 · fixed build 10.0.26100.3775
Windows Server 2025, Windows Server 2025 (Server Core installation) - KB5055526 · fixed build 10.0.20348.3453
Windows Server 2022 (Server Core installation), Windows Server 2022 - KB5055557 · fixed build 6.3.9600.22523
Windows Server 2012 R2 (Server Core installation), Windows Server 2012 R2
What Microsoft changed
- May 30, 2025: In the Security Updates table, corrected the Download and Article links for Windows Server 2012 R2 and Windows Server 2012 R2 (Server Core installation). This is an informational change only.
- May 20, 2025: Added an acknowledgement. This is an informational change only.
- April 8, 2025: Information published.
- April 11, 2025: Acknowledgement added. This is an informational change only.
Details
- Weakness
- CWE-400: Uncontrolled Resource Consumption
- Publicly disclosed (Microsoft)
- No
- Exploited (Microsoft)
- No
- Known exploited (CISA KEV)
- Not listed
- Published
- April 8, 2025
- Last revised
- May 30, 2025
Get told when this changes
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References
From Microsoft, CISA, NVD and FIRST data; the Microsoft details were read when this page was opened. Check the references above before you act.