CVE-2025-26629
highpriority · track · 0EPSS 0.006 · 47 %ileDEEUNLRUUSEPSS · scored 2026-10-25
Use after free in Microsoft Office allows an unauthorized attacker to execute code locally.
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/office365-proplus-security-updates
https://docs.microsoft.com/en-us/officeupdates/office365-proplus-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/office365-proplus-security-updates
https://docs.microsoft.com/en-us/officeupdates/office365-proplus-security-updates - FixedMicrosoft Office LTSC 2024 for 32-bit editionsmsrc_csaf
https://aka.ms/OfficeSecurityReleases:Security Update:https://docs.microsoft.com/en-us/officeupdates/office365-proplus-security-updates
https://docs.microsoft.com/en-us/officeupdates/office365-proplus-security-updates - FixedMicrosoft Office LTSC 2024 for 64-bit editionsmsrc_csaf
https://aka.ms/OfficeSecurityReleases:Security Update:https://docs.microsoft.com/en-us/officeupdates/office365-proplus-security-updates
https://docs.microsoft.com/en-us/officeupdates/office365-proplus-security-updates
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 (40)
Products and version ranges known to be affected.
- Microsoft Office 2016 16.0.5491.1001all versionscert_bundDEcpe:/a:microsoft:office_2016:16.0.5491.1001
- Microsoft Microsoft 365 Apps for Enterprise16.0.1 → https://aka.ms/OfficeSecurityReleasesenisa_euvdEU
- Microsoft Microsoft 365 Apps for Enterprise for 32-bit Systems< https://aka.ms/OfficeSecurityReleasesmsrc_csafUS
advisories (3)
Vendor and ecosystem advisories describing this.
- NCSC-2025-0080Kwetsbaarheden verholpen in Microsoft OfficeNL2025-03-11csaf · ncsc_nlNL
Microsoft heeft kwetsbaarheden verholpen in diverse Office producten.
- WID-SEC-W-2025-0538Microsoft Office: Mehrere Schwachstellen ermöglichen CodeausführungDeutsch2025-03-11csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Microsoft Excel 2016, Microsoft Word 2016, Microsoft Access 2016, Microsoft Office 2016 und Microsoft Office ausnutzen, um beliebigen Programmcode auszuführen.
- msrc_CVE-2025-26629Microsoft Office Remote Code Execution Vulnerability2025-03-11csaf · 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-2025-26629cnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2025-26629cnnvd
- https://vigilance.fr/vulnerability/Microsoft-365-Apps-Office-vulnerabilities-of-March-2025-46572cnnvd
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-26629enisa_euvd
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-26629Vendor Advisorynvd
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