CVE-2023-38172: Microsoft Message Queuing (MSMQ) Denial of Service Vulnerability

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-08-08 · updated 2026-08-10
Weakness: CWE-126

Description

Microsoft Message Queuing (MSMQ) Denial of Service Vulnerability

Affected products

Microsoft Windows 10 Version 1507: all versions
Microsoft Windows 10 1607: all versions
Microsoft Windows 10: all versions
Microsoft Windows 10: all versions
Microsoft Windows 10: all versions
Microsoft Windows 11 21H2: all versions
Microsoft Windows 11: all versions
Microsoft Windows Server 2008: r2-sp1
Microsoft Windows Server 2012: r2
Microsoft Windows Server 2016: all versions
Microsoft Windows Server 2019: all versions
Microsoft Windows Server 2022: all versions
Microsoft Windows 10 Version 1507: from 10.0.10240.0 before 10.0.10240.20107 — fixed in 10.0.10240.20107
Microsoft Windows 10 1607: from 10.0.14393.0 before 10.0.14393.6167 — fixed in 10.0.14393.6167
Microsoft Windows 10: from 10.0.17763.0 before 10.0.17763.4737 — fixed in 10.0.17763.4737
Microsoft Windows 10: from 10.0.19044.0 before 10.0.19044.3324 — fixed in 10.0.19044.3324
Microsoft Windows 10: from 10.0.19045.0 before 10.0.19045.3324 — fixed in 10.0.19045.3324
Microsoft Windows 11 21H2: from 10.0.22000.0 before 10.0.22000.2295 — fixed in 10.0.22000.2295
Microsoft Windows 11: from 10.0.22621.0 before 10.0.22621.2134 — fixed in 10.0.22621.2134
Microsoft Windows Server 2008 R2 Service Pack 1: from 6.1.7601.0 before 6.1.7601.26664 — fixed in 6.1.7601.26664
Microsoft Windows Server 2008 Service Pack 2: from 6.0.6003.0 before 6.0.6003.22216 — fixed in 6.0.6003.22216
Microsoft Windows Server 2012: from 6.2.9200.0 before 6.2.9200.24414 — fixed in 6.2.9200.24414
Microsoft Windows Server 2012 R2: from 6.3.9600.0 before 6.3.9600.21503 — fixed in 6.3.9600.21503
Microsoft Windows Server 2016: from 10.0.14393.0 before 10.0.14393.6167 — fixed in 10.0.14393.6167
Microsoft Windows Server 2019: from 10.0.17763.0 before 10.0.17763.4737 — fixed in 10.0.17763.4737
Microsoft Windows Server 2022: from 10.0.20348.0 before 10.0.20348.1906 — fixed in 10.0.20348.1906

How to fix

Upgrade to a fixed version: Microsoft Windows 10 Version 1507 10.0.10240.20107; Microsoft Windows 10 1607 10.0.14393.6167; Microsoft Windows 10 10.0.17763.4737; Microsoft Windows 10 10.0.19044.3324; Microsoft Windows 10 10.0.19045.3324; Microsoft Windows 11 21H2 10.0.22000.2295; Microsoft Windows 11 10.0.22621.2134; Microsoft Windows Server 2008 R2 Service Pack 1 6.1.7601.26664; Microsoft Windows Server 2008 Service Pack 2 6.0.6003.22216; Microsoft Windows Server 2012 6.2.9200.24414; Microsoft Windows Server 2012 R2 6.3.9600.21503; Microsoft Windows Server 2016 10.0.14393.6167. Check the vendor advisory for mitigations.

References

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