What’s Vulnerable › Vulnerabilities
CVE-2026-20944: Microsoft Word Remote Code Execution Vulnerability
- Severity: high (CVSS 8.4 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.5% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-01-13 · updated 2026-07-30
- Weakness: CWE-125
Description
Out-of-bounds read in Microsoft Office Word allows an unauthorized attacker to execute code locally.
Affected products
- Microsoft 365 Apps: all versions
- Microsoft Office LTSC for Mac 2021: 2021, 2024
- Microsoft 365 Apps: from 16.0.1 before https://aka.ms/OfficeSecurityReleases — fixed in https://aka.ms/OfficeSecurityReleases
- Microsoft Office LTSC for Mac 2024: from 16.0.0 before 16.105.26011018 — fixed in 16.105.26011018
- Microsoft Office LTSC for Mac 2021: from 16.0.1 before 16.105.26011018 — fixed in 16.105.26011018
How to fix
Upgrade to a fixed version: Microsoft 365 Apps https://aka.ms/OfficeSecurityReleases; Microsoft Office LTSC for Mac 2024 16.105.26011018; Microsoft Office LTSC for Mac 2021 16.105.26011018. Check the vendor advisory for mitigations.
References
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