Microsoft Office Security Feature Bypass Vulnerability
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describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2026-21509US | —OT critical | KEV | ||
Reliance on untrusted inputs in a security decision in Microsoft Office allows an unauthorized attacker to bypass a security feature locally. | ||||
references
External citations — patches, advisories, analysis.
remediations (10)
- FixedMicrosoft 365 Apps for Enterprise for 32-bit Systems
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 Systems
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 2016 (32-bit edition)
16.0.5539.1001:Security Update:https://support.microsoft.com/help/5002713
https://support.microsoft.com/help/5002713 - FixedMicrosoft Office 2016 (64-bit edition)
16.0.5539.1001:Security Update:https://support.microsoft.com/help/5002713
https://support.microsoft.com/help/5002713 - FixedMicrosoft Office 2019 for 32-bit editions
16.0.10417.20095:Security Update:https://learn.microsoft.com/en-us/officeupdates/update-history-office-2019
https://learn.microsoft.com/en-us/officeupdates/update-history-office-2019 - FixedMicrosoft Office 2019 for 64-bit editions
16.0.10417.20095:Security Update:https://learn.microsoft.com/en-us/officeupdates/update-history-office-2019
https://learn.microsoft.com/en-us/officeupdates/update-history-office-2019 - FixedMicrosoft Office LTSC 2021 for 32-bit editions
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 2021 for 64-bit editions
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 editions
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 editions
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
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