CVE-2021-28450 json
Microsoft SharePoint Denial of Service Vulnerability
published 5y ago modified 4mo ago also EUVD-2021-15129
- cvss
- 6.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.6%
- EPSS 2.6% chance of exploitation in 30 days, percentile 85%
- public exploits
- 0
- none known
Summary
Microsoft SharePoint Denial of Service Vulnerability
Patch / fix
Is CVE-2021-28450 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 FencerExploit prediction
2.56% chance of exploitation in the next 30 days, higher than 85% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.0 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:L/E:U/RL:O/RC:C |
| CNA | 3.1 | 5.0 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:L |
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 4.0 | AV:N/AC:L/Au:S/C:N/I:N/A:P |
Affected products
- Microsoft Microsoft SharePoint Enterprise Server 2016
- Microsoft Microsoft SharePoint Enterprise Server 2013 Service Pack 1
- Microsoft Microsoft SharePoint Server 2019
- Microsoft Microsoft SharePoint Foundation 2010 Service Pack 2
References
-
portal.msrc.microsoft.com
/en-US/security-guidance/advisory/CVE-2021-28450
patch, vendor-advisory
Sources
- CVE List CVE-2021-28450
- NVD CVE-2021-28450
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.