CVE-2021-28450
mediumpriority · track · 17EPSS 0.024 · 84 %ileEURUUSgrimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
2.40% (84th) EPSS
CVSS 4 · medium
Who says so?
4 sources
cnnvd · enisa_euvd · fstec_bdu · nvd
EPSS · scored 2026-10-27
Microsoft SharePoint Denial of Service Vulnerability
01
cvss
Technical severity, 0–10. One row per scoring source.
6.5
010
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 3.4–6.5
v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:Hsecondary · NVD / NIST USexploitability 2.8 · impact 3.6
v3.15mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:Lsecondary · secure@microsoft.com USexploitability 3.1 · impact 1.4
02
weaknesses
The CWE weakness classes this flaw belongs to.
03
affected products (12)
Products and version ranges known to be affected.
- Microsoft Microsoft SharePoint Enterprise Server 2013 Service Pack 115.0.0 → publicationenisa_euvdEU
04
also known as (4)
Other names and identifiers for this entity.
05
sources
Which sources assert this record, and when.
06
references (7)
External citations — patches, advisories, analysis.
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-28450cnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2021-28450cnnvd
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-28450cnnvd
- https://vigilance.fr/vulnerability/Microsoft-SharePoint-vulnerabilities-of-April-2021-35069cnnvd
- https://www.cybersecurity-help.cz/vdb/SB2021041353cnnvd
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-28450enisa_euvd
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-28450PatchVendor Advisorynvd
scry
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