CVE-2025-27740

EUVD-2025-10142
Weak authentication in Windows Active Directory Certificate Services allows an authorized attacker to elevate privileges over a network.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
8.8 HIGH
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
microsoftCNA
8.8 HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Base Score
CVSS 3.x
EPSS Score
Percentile: 79%
Affected Products (NVD)
VendorProductVersion
microsoftwindows_server_2008
*
microsoftwindows_server_2008
-
microsoftwindows_server_2012
-
microsoftwindows_server_2016
𝑥
< 10.0.14393.7969
microsoftwindows_server_2019
𝑥
< 10.0.17763.7136
microsoftwindows_server_2022
𝑥
< 10.0.20348.3453
microsoftwindows_server_2022_23h2
𝑥
< 10.0.25398.1551
microsoftwindows_server_2025
𝑥
< 10.0.26100.3775
𝑥
= Vulnerable software versions
Windows Releases
Platform
Version
Windows Server 2008
Service Pack 2 (x64, x86)
KB5055609
Service Pack 2 Server Core (x64, x86)
KB5055609
Windows Server 2008 R2
Service Pack 1 (x64)
KB5055570
Service Pack 1 Server Core (x64)
KB5055570
Windows Server 2012
Server Core
KB5055581
Standard
KB5055581
Windows Server 2012 R2
Server Core
KB5055557
Standard
KB5055557
Windows Server 2016
Server Core
KB5055521
Standard
KB5055521
Windows Server 2019
Server Core
KB5055519
Standard
KB5055519
Windows Server 2022
23H2 Server Core
KB5055527
Server Core
KB5055526
Standard
KB5055526
Windows Server 2025
Server Core
KB5055523
Standard
KB5055523
Common Weakness Enumeration
References
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-27740