CVE-2025-21354
highpriority · track · 31EPSS 0.009 · 61 %ileDEEUNLRUUSEPSS · scored 2026-10-27
Microsoft Excel Remote Code Execution Vulnerability
remediations
Vendor fix, mitigation, or workaround guidance, as published by each source.
A vendor fix is available.
- FixedMicrosoft 365 Apps for Enterprise for 32-bit Systemsmsrc_csaf
https://aka.ms/OfficeSecurityReleases:Security Update:https://docs.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates
https://docs.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates - FixedMicrosoft 365 Apps for Enterprise for 64-bit Systemsmsrc_csaf
https://aka.ms/OfficeSecurityReleases:Security Update:https://docs.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates
https://docs.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates - FixedMicrosoft Office 2019 for 32-bit editionsmsrc_csaf
https://aka.ms/OfficeSecurityReleases:Security Update:https://docs.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates
https://docs.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates - FixedMicrosoft Office 2019 for 64-bit editionsmsrc_csaf
https://aka.ms/OfficeSecurityReleases:Security Update:https://docs.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates
https://docs.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates - FixedMicrosoft Office LTSC 2021 for 32-bit editionsmsrc_csaf
https://aka.ms/OfficeSecurityReleases:Security Update:https://docs.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates
https://docs.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates - FixedMicrosoft Office LTSC 2021 for 64-bit editionsmsrc_csaf
https://aka.ms/OfficeSecurityReleases:Security Update:https://docs.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates
https://docs.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates - FixedMicrosoft Office LTSC 2024 for 32-bit editionsmsrc_csaf
https://aka.ms/OfficeSecurityReleases:Security Update:https://docs.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates
https://docs.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates - FixedMicrosoft Office LTSC 2024 for 64-bit editionsmsrc_csaf
https://aka.ms/OfficeSecurityReleases:Security Update:https://docs.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates
https://docs.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates - FixedMicrosoft Office LTSC for Mac 2021msrc_csaf
16.93.25011212:Security Update:https://go.microsoft.com/fwlink/p/?linkid=831049
https://go.microsoft.com/fwlink/p/?linkid=831049 - FixedMicrosoft Office LTSC for Mac 2024msrc_csaf
16.93.25011212:Security Update:https://go.microsoft.com/fwlink/p/?linkid=831049
https://go.microsoft.com/fwlink/p/?linkid=831049 - FixedOffice Online Servermsrc_csaf
16.0.10416.20047:Security Update:https://support.microsoft.com/help/5002677
https://support.microsoft.com/help/5002677
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (66)
Products and version ranges known to be affected.
- Microsoft SharePoint Enterprise Server 2016all versionscert_bundDEcpe:/a:microsoft:sharepoint:enterprise_server_2016
- Microsoft SharePoint Server Subscription Editionall versionscert_bundDEcpe:/a:microsoft:sharepoint:server_subscription_edition
advisories (3)
Vendor and ecosystem advisories describing this.
- NCSC-2025-0012Kwetsbaarheden verholpen in Microsoft OfficeNL2025-01-14csaf · ncsc_nlNL
Microsoft heeft kwetsbaarheden verholpen in diverse Office producten.
- WID-SEC-W-2025-0092Microsoft Office: Mehrere SchwachstellenDeutsch2025-01-14csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Microsoft Excel 2016, Microsoft Access 2016, Microsoft Office 2016, Microsoft Outlook 2016, Microsoft Office Online Server, Microsoft SharePoint, Microsoft Office 2019, Microsoft SharePoint Server 2019, Microsoft 365 Apps, Microsoft Office, Microsoft Outlook und Microsoft OneNote ausnutzen, um seine Privilegien zu erhöhen, Sicherheitsmaßnahmen zu umgehen, beliebigen Code auszuführen und einen Spoofing-Angriff zu starten.
- msrc_CVE-2025-21354Microsoft Excel Remote Code Execution Vulnerability2025-01-14csaf · 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.
references (5)
External citations — patches, advisories, analysis.
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21354cnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2025-21354cnnvd
- https://vigilance.fr/vulnerability/Microsoft-365-Apps-Office-vulnerabilities-of-January-2025-46100cnnvd
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21354enisa_euvd
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21354PatchVendor Advisorynvd
Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.
Free scan