Summary
Impact: Denial of Service. Microsoft rating: Important. Not known to be exploited — Exploitation Less Likely. Customer action: Required.
Details
According to the CVSS metrics, successful exploitation of this vulnerability could lead to major loss of availability (A:H). What does that mean for this vulnerability?
An attacker can send specially crafted messages to the MSMQ service, which could affect availability of the service and result in Denial of Service (DoS).
Security updates
10.0.17763.6893 — https://support.microsoft.com/help/5052000
10.0.20348.3207 — https://support.microsoft.com/help/5051979
10.0.20348.3148 — https://support.microsoft.com/help/5052106
10.0.19044.5487 — https://support.microsoft.com/help/5051974
10.0.22621.4890 — https://support.microsoft.com/help/5051989
10.0.26100.3194 — https://support.microsoft.com/help/5051987
10.0.26100.3107 — https://support.microsoft.com/help/5052105
10.0.25398.1425 — https://support.microsoft.com/help/5051980
10.0.10240.20915 — https://support.microsoft.com/help/5052040
10.0.14393.7785 — https://support.microsoft.com/help/5052006
6.0.6003.23117 — https://support.microsoft.com/help/5052038
6.0.6003.23117 — https://support.microsoft.com/help/5052072
6.1.7601.27566 — https://support.microsoft.com/help/5052016
6.1.7601.27566 — https://support.microsoft.com/help/5052032
6.2.9200.25317 — https://support.microsoft.com/help/5052020
6.3.9600.22417 — https://support.microsoft.com/help/5052042
Vulnerabilities 1
-
High 7.5
Microsoft Message Queuing (MSMQ) Denial of Service Vulnerability
Microsoft Message Queuing (MSMQ) Denial of Service Vulnerability
Revision history
-
#1
Information published.
References
-
CVE-2025-21181 Microsoft Message Queuing (MSMQ) Denial of Service Vulnerability - HTML
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21181
-
Microsoft Exploitability Index
https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1
-
Microsoft Support Lifecycle
https://support.microsoft.com/lifecycle
-
Common Vulnerability Scoring System
https://www.first.org/cvss