CVE-2023-21742

highpriority · track · 30EPSS 0.558 · 99 %ileexploit · PoCDEEURUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

1 exploit · PoC

Likely / severe?

55.8% (99th) EPSS

CVSS 8.8 · high

Is it mine?

37 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

Microsoft SharePoint Server Remote Code Execution Vulnerability

remediations

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

A vendor fix is available.

FixedMicrosoft SharePoint Enterprise Server 2013 Service Pack 1msrc_csaf
15.0.5519.1000:Cumulative Update:https://support.microsoft.com/help/5002335
https://support.microsoft.com/help/5002335
FixedMicrosoft SharePoint Enterprise Server 2016msrc_csaf
16.0.5378.1000:Security Update:https://support.microsoft.com/help/5002338
https://support.microsoft.com/help/5002338
FixedMicrosoft SharePoint Foundation 2013 Service Pack 1msrc_csaf
15.0.5519.1000:Security Update:https://support.microsoft.com/help/5002336
https://support.microsoft.com/help/5002336
FixedMicrosoft SharePoint Server 2019msrc_csaf
16.0.10394.20021:Security Update:https://support.microsoft.com/help/5002329
https://support.microsoft.com/help/5002329
FixedMicrosoft SharePoint Server Subscription Editionmsrc_csaf
16.0.15601.20418:Security Update:https://support.microsoft.com/help/5002331
https://support.microsoft.com/help/5002331

cvss

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

8.8

010

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

v3.18.8highAV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:Csecondary · ENISA EU

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · secure@microsoft.com USexploitability 2.8 · impact 5.9

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:Hsecondary · CVSS-BT (t0sche)

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:Csecondary · Microsoft Security Response Center US

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-20USCWE-284USCWE-284US

exploits (1)

Public proof-of-concept and weaponised exploit code.

ohnonoyesyes/CVE-2023-21742CVE-2023-21742 PocPoC · poc_in_github

affected products (37)

Products and version ranges known to be affected.

Microsoft 365 Appsall versionscert_bundDEcpe:/a:microsoft:365_apps:-
Microsoft Office 2019all versionscert_bundDEcpe:/a:microsoft:office_2019:-
Microsoft Office 2019 for Macall versionscert_bundDEcpe:/a:microsoft:office_2019_for_mac:-
Microsoft Office LTSC 2021all versionscert_bundDEcpe:/a:microsoft:office:ltsc_2021
Microsoft Office LTSC for Mac 2021all versionscert_bundDEcpe:/a:microsoft:office:ltsc_for_mac_2021
Microsoft SharePoint Enterprise Server 2013 SP1all versionscert_bundDEcpe:/a:microsoft:sharepoint:enterprise_server_2013_sp1
Microsoft SharePoint Enterprise Server 2016all versionscert_bundDEcpe:/a:microsoft:sharepoint:enterprise_server_2016
Microsoft SharePoint Foundation 2013 SP1all versionscert_bundDEcpe:/a:microsoft:sharepoint_foundation_2013:sp1
Microsoft SharePoint Server 2019all versionscert_bundDEcpe:/a:microsoft:sharepoint_server_2019:-
Microsoft SharePoint Server Subscription Editionall versionscert_bundDEcpe:/a:microsoft:sharepoint:server_subscription_edition
Microsoft Visio 2013 SP1all versionscert_bundDEcpe:/a:microsoft:visio_2013:sp1
Microsoft Visio 2016all versionscert_bundDEcpe:/a:microsoft:visio_2016:-
Microsoft Microsoft SharePoint Enterprise Server 2013 Service Pack 115.0.0 → 15.0.5519.1000enisa_euvdEU
Microsoft Microsoft SharePoint Enterprise Server 201616.0.0 → 16.0.5378.1000enisa_euvdEU
Microsoft Microsoft SharePoint Foundation 2013 Service Pack 115.0.0 → 15.0.5519.1000enisa_euvdEU
Microsoft Microsoft SharePoint Server 201916.0.0 → 16.0.10394.20021enisa_euvdEU
Microsoft Microsoft SharePoint Server Subscription Edition16.0.0 → 16.0.15601.20418enisa_euvdEU
Microsoft Corp Microsoft SharePoint Enterprise Server≤ 2013 SP1fstec_bduRU
Microsoft Corp Microsoft SharePoint Enterprise Server 2016all versionsfstec_bduRU
Microsoft Corp Microsoft SharePoint Foundation≤ 2013 SP1fstec_bduRU

showing 20 of 37

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2023-0057Microsoft Office: Mehrere SchwachstellenDeutsch2023-01-10csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in verschiedenen Microsoft Office Produkten ausnutzen, um beliebigen Code auszuführen, Sicherheitsmaßnahmen zu umgehen und vertrauliche Informationen offenzulegen.
msrc_CVE-2023-21742Microsoft SharePoint Server Remote Code Execution Vulnerability2023-01-10csaf · 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 cert_bund msrc_csaf NVD CVE.org MITRE

published 2023-01-10modified 2026-06-17

references (5)

External citations — patches, advisories, analysis.

scry

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