CVE-2025-27740
Active Directory Certificate Services Elevation of Privilege Vulnerability
CVE-2025-27740 is fixed in 19 products on 1 platform, first by KB5055521, released April 8, 2025. It is not reported as exploited. Patch Radar priority: High.
High
CVSS
8.8
Important
Exploitation
None reported
Exploitation Less Likely
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0352
89th percentile
<p>Weak authentication in Windows Active Directory Certificate Services allows an authorized attacker to elevate privileges over a network.</p>
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Microsoft | |||
| Windows Server 2008 R2 for x64-based Systems Service Pack 1 | KB5055561 | Apr 8, 2025 | |
| Windows Server 2008 R2 for x64-based Systems Service Pack 1 | KB5055570 | Apr 8, 2025 | |
| Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | KB5055561 | Apr 8, 2025 | |
| Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | KB5055570 | Apr 8, 2025 | |
| Windows Server 2008 for 32-bit Systems Service Pack 2 | KB5055609 | Apr 8, 2025 | |
| Windows Server 2008 for 32-bit Systems Service Pack 2 | KB5055596 | Apr 8, 2025 | |
| Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) | KB5055609 | Apr 8, 2025 | |
| Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) | KB5055596 | Apr 8, 2025 | |
| Windows Server 2008 for x64-based Systems Service Pack 2 | KB5055609 | Apr 8, 2025 | |
| Windows Server 2008 for x64-based Systems Service Pack 2 | KB5055596 | Apr 8, 2025 | |
| Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) | KB5055609 | Apr 8, 2025 | |
| Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) | KB5055596 | Apr 8, 2025 | |
| Windows Server 2012 | KB5055581 | Apr 8, 2025 | |
| Windows Server 2012 (Server Core installation) | KB5055581 | Apr 8, 2025 | |
| Windows Server 2012 R2 | KB5055557 | Apr 8, 2025 | |
| Windows Server 2012 R2 (Server Core installation) | KB5055557 | Apr 8, 2025 | |
| Windows Server 2016 | 14393.7969 | KB5055521 | Apr 8, 2025 |
| Windows Server 2016 (Server Core installation) | 14393.7969 | KB5055521 | Apr 8, 2025 |
| Windows Server 2019 | 17763.7136 | KB5055519 | Apr 8, 2025 |
| Windows Server 2019 (Server Core installation) | 17763.7136 | KB5055519 | Apr 8, 2025 |
| Windows Server 2022 | 20348.3453 | KB5055526 | Apr 8, 2025 |
| Windows Server 2022 (Server Core installation) | 20348.3453 | KB5055526 | Apr 8, 2025 |
| Windows Server 2022, 23H2 Edition (Server Core installation) | 25398.1551 | KB5055527 | Apr 8, 2025 |
| Windows Server 2025 | 26100.3775 | KB5055523 | Apr 8, 2025 |
| Windows Server 2025 (Server Core installation) | 26100.3775 | KB5055523 | Apr 8, 2025 |
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