CVE tracker / CVE-2025-27471

CVE-2025-27471

CVE-2025-27471 is the Microsoft Streaming Service Denial of Service Vulnerability. Microsoft rates it Important, CVSS 5.9. It is not in CISA's Known Exploited Vulnerabilities catalog. Published April 8, 2025.

Risk summary

MediumDenial of Service
5.9
CVSS v3 base
1.3%
EPSS: chance of exploitation in 30 days
Medium
Severity
Important
Microsoft's rating
Less Likely
Microsoft: exploitation
No
In CISA KEV

Microsoft describes it: “Sensitive data storage in improperly locked memory in Microsoft Streaming Service allows an unauthorized attacker to deny service over a network.”

How to fix it

Microsoft lists 37 affected products and the update that fixes each:

What Microsoft changed

Details

Weakness
CWE-591: Sensitive Data Storage in Improperly Locked Memory
Publicly disclosed (Microsoft)
No
Exploited (Microsoft)
No
Known exploited (CISA KEV)
Not listed
Published
April 8, 2025
Last revised
April 9, 2025

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References

Microsoft Security Update Guide NVD CVE record CWE

From Microsoft, CISA, NVD and FIRST data; the Microsoft details were read when this page was opened. Check the references above before you act.