CVE-2021-24104

mediumpriority · track · 24EPSS 0.015 · 74 %ileEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.47% (74th) EPSS

CVSS 5.8 · medium

Is it mine?

15 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · msrc_csaf

EPSS · scored 2026-10-27

Microsoft SharePoint Server Spoofing Vulnerability

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

FixedMicrosoft SharePoint Enterprise Server 2016msrc_csaf
Security Update:https://support.microsoft.com/kb/4493199
https://support.microsoft.com/kb/4493199
FixedMicrosoft SharePoint Foundation 2013 Service Pack 1msrc_csaf
Security Update:https://support.microsoft.com/kb/4493177
https://support.microsoft.com/kb/4493177
FixedMicrosoft SharePoint Server 2019msrc_csaf
16.0.10372.20000:Security Update:https://support.microsoft.com/kb/4493230
https://support.microsoft.com/kb/4493230

cvss

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

5.8

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.05.8mediumAV:N/AC:M/Au:N/C:P/I:P/A:Nprimary · NVD / NIST USexploitability 8.6 · impact 4.9

v2.04.9mediumAV:N/AC:M/Au:N/C:P/I:P/A:N/E:Usecondary · CVSS-BT (t0sche)

v3.15.4mediumAV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:Nsecondary · FSTEC (BDU) RU

v3.14.6mediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:Nsecondary · secure@microsoft.com USexploitability 1.5 · impact 2.7

v3.14.6mediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N/E:P/RL:W/RC:Csecondary · Microsoft Security Response Center US

v3.14.6mediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N/E:P/RL:W/RC:Csecondary · ENISA EU

v3.15.4mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:Nsecondary · NVD / NIST USexploitability 2.8 · impact 2.5

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-20US

affected products (15)

Products and version ranges known to be affected.

Microsoft Microsoft SharePoint Enterprise Server 201616.0.0 → publicationenisa_euvdEU
Microsoft Microsoft SharePoint Foundation 2013 Service Pack 115.0.0 → publicationenisa_euvdEU
Microsoft Microsoft SharePoint Server 201916.0.0 → publicationenisa_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 Enterprise Server 2016all versionsfixedmsrc_csafUS
Microsoft SharePoint Enterprise Server 2016< 16.0.5134.1000msrc_csafUS
Microsoft SharePoint Foundation 2013 Service Pack 1all versionsfixedmsrc_csafUS
Microsoft SharePoint Foundation 2013 Service Pack 1< 15.0.5327.1000msrc_csafUS
Microsoft SharePoint Server 2019all versionsfixedmsrc_csafUS
Microsoft SharePoint Server 2019< 16.0.10372.20000msrc_csafUS
microsoft sharepoint enterprise server= 2016nvdUScpe:2.3:a:microsoft:sharepoint_enterprise_server:*:*:*:*:*:*:*:*
microsoft sharepoint foundation= 2013nvdUScpe:2.3:a:microsoft:sharepoint_foundation:*:*:*:*:*:*:*:*
microsoft sharepoint server= 2019nvdUScpe:2.3:a:microsoft:sharepoint_server:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

msrc_CVE-2021-24104Microsoft SharePoint Server Spoofing Vulnerability2021-03-09csaf · msrc_csafUS
To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu msrc_csaf nvd NVD CVE.org MITRE

published 2021-03-11modified 2026-08-19

references (6)

External citations — patches, advisories, analysis.

scry

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