CVE-2023-21717

highpriority · track · 0EPSS 0.011 · 65 %ileDEEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

1.09% (65th) EPSS

CVSS 8.8 · high

Is it mine?

44 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

Microsoft SharePoint Server Elevation of Privilege 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
15.0.5529.1000:Security Update:https://support.microsoft.com/help/5002312
https://support.microsoft.com/help/5002312
FixedMicrosoft SharePoint Enterprise Server 2016msrc_csaf
16.0.5383.1000:Security Update:https://support.microsoft.com/help/5002325
https://support.microsoft.com/help/5002325
FixedMicrosoft SharePoint Foundation 2013 Service Pack 1msrc_csaf
15.0.5529.1000:Security Update:https://support.microsoft.com/help/5002312
https://support.microsoft.com/help/5002312
FixedMicrosoft SharePoint Server 2019msrc_csaf
16.0.10395.20001:Security Update:https://support.microsoft.com/help/5002330
https://support.microsoft.com/help/5002330
FixedMicrosoft SharePoint Server Subscription Editionmsrc_csaf
16.0.15601.20478:Security Update:https://support.microsoft.com/help/5002353
https://support.microsoft.com/help/5002353

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

v3.18.1highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · 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

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-284USCWE-284USCWE-284US

affected products (44)

Products and version ranges known to be affected.

Microsoft 365 Appsall versionscert_bundDEcpe:/a:microsoft:365_apps:-
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 Office Online Serverall versionscert_bundDEcpe:/a:microsoft:office_online_server:2016
Microsoft Office Web Apps Server 2013 SP1all versionscert_bundDEcpe:/a:microsoft:office_web_apps_server_2013:sp1
Microsoft Office for Androidall versionscert_bundDEcpe:/a:microsoft:office:for_android
Microsoft Office for Universalall versionscert_bundDEcpe:/a:microsoft:office:for_universal
Microsoft Office for iOSall versionscert_bundDEcpe:/a:microsoft:office:for_ios
Microsoft OneNote for Androidall versionscert_bundDEcpe:/a:microsoft:onenote:for_android
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 SharePoint Server Subscription Edition Language Packall versionscert_bundDEcpe:/a:microsoft:sharepoint:server_subscription_edition_language_pack
Microsoft Word 2013 RT SP1all versionscert_bundDEcpe:/a:microsoft:word_2013:rt_sp_1
Microsoft Word 2013 SP1all versionscert_bundDEcpe:/a:microsoft:word_2013:sp_1
Microsoft Word 2016all versionscert_bundDEcpe:/a:microsoft:word_2016:-
Microsoft Microsoft SharePoint Enterprise Server 2013 Service Pack 115.0.0 → 15.0.5529.1000enisa_euvdEU

showing 20 of 44

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2023-0391Microsoft Office Produkte: Mehrere SchwachstellenDeutsch2023-02-14csaf · cert_bundDE
Ein entfernter, anonymer oder authentisierter Angreifer kann mehrere Schwachstellen in verschiedenen Microsoft Office und SharePoint Produkten ausnutzen, um seine Privilegien zu erhöhen, beliebigen Code auszuführen, Sicherheitsmechanismen zu umgehen und Informationen offenzulegen.
msrc_CVE-2023-21717Microsoft SharePoint Server Elevation of Privilege Vulnerability2023-02-14csaf · 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 2023-02-14modified 2026-08-19

references (4)

External citations — patches, advisories, analysis.

scry

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