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Fencer Vulns
high 8.3

CVE-2022-21837 json

Microsoft SharePoint Server Remote Code Execution Vulnerability

published 2022-01-11 4 y ago modified 2026-06-17 4 mo ago also EUVD-2022-26993

cvss
8.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
3.2%
EPSS 3.2% chance of exploitation in 30 days, percentile 88%
public exploits
0
none known

Summary

Microsoft SharePoint Server Remote Code Execution Vulnerability

Patch / fix

  • Microsoft Microsoft SharePoint Enterprise Server 2016 16.0.5266.1000
  • Microsoft Microsoft SharePoint Server 2019 16.0.10382.20004
  • Microsoft Microsoft SharePoint Server Subscription Edition 16.0.14326.20714
  • Microsoft Microsoft SharePoint Foundation 2013 Service Pack 1 15.0.5415.1000

Exploit prediction

3.19% chance of exploitation in the next 30 days, higher than 88% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 8.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L/E:U/RL:O/RC:C
CNA 3.1 8.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
NVD 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 9.0 AV:N/AC:L/Au:S/C:C/I:C/A:C

Affected products

  • Microsoft Microsoft SharePoint Enterprise Server 2016
  • Microsoft Microsoft SharePoint Server 2019
  • Microsoft Microsoft SharePoint Server Subscription Edition
  • Microsoft Microsoft SharePoint Foundation 2013 Service Pack 1

References

Sources

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.