CVE-2021-41361 json
Active Directory Federation Server Spoofing Vulnerability
published 2021-10-13 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-28389
- cvss
- 5.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.9%
- EPSS 0.9% chance of exploitation in 30 days, percentile 61%
- public exploits
- 0
- none known
Summary
Active Directory Federation Server Spoofing Vulnerability
Patch / fix
- Microsoft Windows Server 2019 10.0.17763.2237
- Microsoft Windows Server 2019 (Server Core installation) 10.0.17763.2237
- Microsoft Windows Server 2022 10.0.20348.288
- Microsoft Windows Server version 2004 10.0.19041.1288
- Microsoft Windows Server version 20H2 10.0.19041.1288
- Microsoft Windows Server 2016 10.0.14393.4704
- Microsoft Windows Server 2016 (Server Core installation) 10.0.14393.4704
Exploit prediction
0.95% chance of exploitation in the next 30 days, higher than 61% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C |
| CNA | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
| CNA | 3.1 | 3.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N |
| NVD | 2.0 | 3.5 | AV:N/AC:M/Au:S/C:N/I:P/A:N |
Affected products
- Microsoft Windows Server 2019
- Microsoft Windows Server 2019 (Server Core installation)
- Microsoft Windows Server 2022
- Microsoft Windows Server version 2004
- Microsoft Windows Server version 20H2
- Microsoft Windows Server 2016
- Microsoft Windows Server 2016 (Server Core installation)
References
-
portal.msrc.microsoft.com
/en-US/security-guidance/advisory/CVE-2021-41361
patch, vendor-advisory
Sources
- CVE List CVE-2021-41361
- NVD CVE-2021-41361
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.