CVE-2025-21193 json
Active Directory Federation Server Spoofing Vulnerability
published 2025-01-14 21 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-2270
- cvss
- 6.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 54%
- public exploits
- 0
- none known
Summary
Active Directory Federation Server Spoofing Vulnerability
Patch / fix
- Microsoft Windows Server 2016 10.0.14393.7699
- Microsoft Windows Server 2016 (Server Core installation) 10.0.14393.7699
- Microsoft Windows Server 2019 10.0.17763.6775
- Microsoft Windows Server 2019 (Server Core installation) 10.0.17763.6775
- Microsoft Windows Server 2022 10.0.20348.3091
- Microsoft Windows Server 2022, 23H2 Edition (Server Core installation) 10.0.25398.1369
- Microsoft Windows Server 2025 10.0.26100.2894
- Microsoft Windows Server 2025 (Server Core installation) 10.0.26100.2894
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 21 mo ago
Exploit prediction
0.74% chance of exploitation in the next 30 days, higher than 54% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C |
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N |
Affected products
- Microsoft Windows Server 2016
- Microsoft Windows Server 2016 (Server Core installation)
- Microsoft Windows Server 2019
- Microsoft Windows Server 2019 (Server Core installation)
- Microsoft Windows Server 2022
- Microsoft Windows Server 2022, 23H2 Edition (Server Core installation)
- Microsoft Windows Server 2025
- Microsoft Windows Server 2025 (Server Core installation)
Classification
- Weakness
-
- CWE-352 Cross-Site Request Forgery
References
-
msrc.microsoft.com
/update-guide/vulnerability/CVE-2025-21193
vendor-advisory, patch
Sources
- CVE List CVE-2025-21193
- NVD CVE-2025-21193
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.