CVE-2025-50177
Microsoft Message Queuing (MSMQ) Remote Code Execution Vulnerability
CVE-2025-50177 is fixed in 37 products on 1 platform, first by KB5063871, released August 12, 2025. It is not reported as exploited, but the vendor rates exploitation more likely. Patch Radar priority: Urgent.
Urgent
CVSS
8.1
Critical
Exploitation
More likely
Vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0461
91st percentile
<p>Use after free in Windows Message Queuing allows an unauthorized attacker to execute code over a network.</p>
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Microsoft | |||
| Windows 10 Version 1607 for 32-bit Systems | 14393.8330 | KB5063871 | Aug 12, 2025 |
| Windows 10 Version 1607 for x64-based Systems | 14393.8330 | KB5063871 | Aug 12, 2025 |
| Windows 10 Version 1809 for 32-bit Systems | 17763.7678 | KB5063877 | Aug 12, 2025 |
| Windows 10 Version 1809 for x64-based Systems | 17763.7678 | KB5063877 | Aug 12, 2025 |
| Windows 10 Version 21H2 for 32-bit Systems | KB5063709 | Aug 12, 2025 | |
| Windows 10 Version 21H2 for ARM64-based Systems | KB5063709 | Aug 12, 2025 | |
| Windows 10 Version 21H2 for x64-based Systems | KB5063709 | Aug 12, 2025 | |
| Windows 10 Version 22H2 for 32-bit Systems | KB5063709 | Aug 12, 2025 | |
| Windows 10 Version 22H2 for ARM64-based Systems | KB5063709 | Aug 12, 2025 | |
| Windows 10 Version 22H2 for x64-based Systems | KB5063709 | Aug 12, 2025 | |
| Windows 10 for 32-bit Systems | 10240.21100 | KB5063889 | Aug 12, 2025 |
| Windows 10 for x64-based Systems | 10240.21100 | KB5063889 | Aug 12, 2025 |
| Windows 11 Version 22H2 for ARM64-based Systems | KB5063875 | Aug 12, 2025 | |
| Windows 11 Version 22H2 for x64-based Systems | KB5063875 | Aug 12, 2025 | |
| Windows 11 Version 23H2 for ARM64-based Systems | KB5063875 | Aug 12, 2025 | |
| Windows 11 Version 23H2 for x64-based Systems | KB5063875 | Aug 12, 2025 | |
| Windows 11 Version 24H2 for ARM64-based Systems | 26100.4946 | KB5063878 | Aug 12, 2025 |
| Windows 11 Version 24H2 for ARM64-based Systems | 26100.4851 | KB5064010 | Aug 12, 2025 |
| Windows 11 Version 24H2 for x64-based Systems | 26100.4946 | KB5063878 | Aug 12, 2025 |
| Windows 11 Version 24H2 for x64-based Systems | 26100.4851 | KB5064010 | Aug 12, 2025 |
| Windows Server 2008 R2 for x64-based Systems Service Pack 1 | KB5063927 | Aug 12, 2025 | |
| Windows Server 2008 R2 for x64-based Systems Service Pack 1 | KB5063947 | Aug 12, 2025 | |
| Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | KB5063927 | Aug 12, 2025 | |
| Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | KB5063947 | Aug 12, 2025 | |
| Windows Server 2008 for 32-bit Systems Service Pack 2 | KB5063948 | Aug 12, 2025 | |
| Windows Server 2008 for 32-bit Systems Service Pack 2 | KB5063888 | Aug 12, 2025 | |
| Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) | KB5063948 | Aug 12, 2025 | |
| Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) | KB5063888 | Aug 12, 2025 | |
| Windows Server 2008 for x64-based Systems Service Pack 2 | KB5063948 | Aug 12, 2025 | |
| Windows Server 2008 for x64-based Systems Service Pack 2 | KB5063888 | Aug 12, 2025 | |
| Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) | KB5063948 | Aug 12, 2025 | |
| Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) | KB5063888 | Aug 12, 2025 | |
| Windows Server 2012 | KB5063906 | Aug 12, 2025 | |
| Windows Server 2012 (Server Core installation) | KB5063906 | Aug 12, 2025 | |
| Windows Server 2012 R2 | KB5063950 | Aug 12, 2025 | |
| Windows Server 2012 R2 (Server Core installation) | KB5063950 | Aug 12, 2025 | |
| Windows Server 2016 | 14393.8330 | KB5063871 | Aug 12, 2025 |
| Windows Server 2016 (Server Core installation) | 14393.8330 | KB5063871 | Aug 12, 2025 |
| Windows Server 2019 | 17763.7678 | KB5063877 | Aug 12, 2025 |
| Windows Server 2019 (Server Core installation) | 17763.7678 | KB5063877 | Aug 12, 2025 |
| Windows Server 2022 | 20348.4052 | KB5063880 | Aug 12, 2025 |
| Windows Server 2022 | 20348.3989 | KB5063812 | Aug 12, 2025 |
| Windows Server 2022 (Server Core installation) | 20348.4052 | KB5063880 | Aug 12, 2025 |
| Windows Server 2022 (Server Core installation) | 20348.3989 | KB5063812 | Aug 12, 2025 |
| Windows Server 2022, 23H2 Edition (Server Core installation) | 25398.1791 | KB5063899 | Aug 12, 2025 |
| Windows Server 2025 | 26100.4946 | KB5063878 | Aug 12, 2025 |
| Windows Server 2025 | 26100.4851 | KB5064010 | Aug 12, 2025 |
| Windows Server 2025 (Server Core installation) | 26100.4946 | KB5063878 | Aug 12, 2025 |
| Windows Server 2025 (Server Core installation) | 26100.4851 | KB5064010 | Aug 12, 2025 |
Patch Radar data is free to use with attribution. Terms and how to credit it.
Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.