CVE-2025-21393 json
Microsoft SharePoint Server Spoofing Vulnerability
published last yr. modified 4mo ago also EUVD-2025-2454
- cvss
- 6.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.1%
- EPSS 1.1% chance of exploitation in 30 days, percentile 64%
- public exploits
- 0
- none known
Summary
Microsoft SharePoint Server Spoofing Vulnerability
Patch / fix
- Microsoft Microsoft SharePoint Enterprise Server 2016 16.0.5483.1001
- Microsoft Microsoft SharePoint Server 2019 16.0.10416.20041
- Microsoft Microsoft SharePoint Server Subscription Edition 16.0.17928.20356
Is CVE-2025-21393 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- last yr.
Exploit prediction
1.06% chance of exploitation in the next 30 days, higher than 64% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N/E:U/RL:O/RC:C |
| CNA | 3.1 | 6.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N |
| NVD | 3.1 | 6.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N |
Affected products
- Microsoft Microsoft SharePoint Enterprise Server 2016
- Microsoft Microsoft SharePoint Server 2019
- Microsoft Microsoft SharePoint Server Subscription Edition
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
msrc.microsoft.com
/update-guide/vulnerability/CVE-2025-21393
vendor-advisory, patch
Sources
- CVE List CVE-2025-21393
- NVD CVE-2025-21393
Fencer Intel 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.