CVE-2021-31950

mediumpriority · track · 34EPSS 0.046 · 92 %ileexploit · PoCEURUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

1 exploit · PoC

Likely / severe?

4.56% (92nd) EPSS

CVSS 5.5 · medium

Is it mine?

9 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

EPSS · scored 2026-10-26

Microsoft SharePoint Server Spoofing Vulnerability

cvss

Technical severity, 0–10. One row per scoring source.

8.1

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5–8.1

v2.05.5mediumAV:N/AC:L/Au:S/C:P/I:P/A:Nprimary · NVD / NIST USexploitability 8 · impact 4.9

v2.05mediumAV:N/AC:L/Au:S/C:P/I:P/A:N/E:POCsecondary · CVSS-BT (t0sche)

v3.18.1highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Nsecondary · NVD / NIST USexploitability 2.8 · impact 5.2

v3.16.3mediumAV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:Nsecondary · FSTEC (BDU) RU

v3.17.6highCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N/E:U/RL:O/RC:Csecondary · ENISA EU

v3.17.6highCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:Nsecondary · secure@microsoft.com USexploitability 2.3 · impact 4.7

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-918USprimaryCWE-20US

exploits (1)

Public proof-of-concept and weaponised exploit code.

EDB-49982Microsoft SharePoint Server 16.0.10372.20060 - 'GetXmlDataFromDataSource' Server-Side Request Forgery (SSRF)PoC · exploit_db

affected products (9)

Products and version ranges known to be affected.

Microsoft Microsoft SharePoint Enterprise Server 201616.0.0 → 16.0.5173.1000enisa_euvdEU
Microsoft Microsoft SharePoint Foundation 2013 Service Pack 115.0.0 → 15.0.5353.1000enisa_euvdEU
Microsoft Microsoft SharePoint Server 201916.0.0 → 16.0.10375.20000enisa_euvdEU
Microsoft Corp Microsoft SharePoint Enterprise Server 2016all versionsfstec_bduRU
Microsoft Corp Microsoft SharePoint Foundation≤ 2013 SP1fstec_bduRU
Microsoft Corp Microsoft SharePoint Server 2019all versionsfstec_bduRU
microsoft sharepoint foundation= 2013nvdUScpe:2.3:a:microsoft:sharepoint_foundation:*:*:*:*:*:*:*:*
microsoft sharepoint server= 2016nvdUScpe:2.3:a:microsoft:sharepoint_server:*:*:*:*:*:*:*:*
microsoft sharepoint server= 2019nvdUScpe:2.3:a:microsoft:sharepoint_server:*:*:*:*:*:*:*:*

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu nvd NVD CVE.org MITRE

published 2021-06-08modified 2026-06-17

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+4170 more

references (11)

External citations — patches, advisories, analysis.

scry

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