CVE-2026-108427: Microsoft Office Word Remote Code Execution Vulnerability
Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.
Other sources
Microsoft Office Word Remote Code Execution Vulnerability
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in https://aka.ms/OfficeSecurityReleases - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.17932.21056 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.14334.20974
Event History
Frequently Asked Questions
What user interaction is required for exploitation?
Exploitation requires user interaction. An attacker would need a user to interact with malicious content in Microsoft Word; the provided data does not specify the exact delivery method or interaction.
Which Office deployments are identified as affected?
The affected software list includes Microsoft 365 Apps for Enterprise and Microsoft Office LTSC 2021 and LTSC 2024, in both 32-bit and 64-bit editions where listed.
What level of access does an attacker need before attempting exploitation?
No prior privileges are required. The vector is network-based and the vulnerability may allow an unauthorized attacker to execute code.