CVE-2025-21181
HIGH severity · CVSS 7.5 · Uncontrolled resource consumption
7.5CVSS HIGH
Summary
Microsoft Message Queuing (MSMQ) Denial of Service Vulnerability
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
Confidentiality impactNone
Integrity impactNone
Availability impactHigh
Exploit probability (EPSS)3%
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Official patch: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21181 ↗
Additional information
- NVD record
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21181Patch
- https://www.vicarius.io/vsociety/posts/cve-2025-21181-denial-of-service-vulnerability-in-microsoft-message-queuing-detection-script
- https://www.vicarius.io/vsociety/posts/cve-2025-21181-denial-of-service-vulnerability-in-microsoft-message-queuing-mitigation-script