CVE-2026-88202: 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 16.0.17932.21056 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.14334.20974 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in https://aka.ms/OfficeSecurityReleases
Event History
Frequently Asked Questions
What does an attacker need to exploit this issue?
The CVSS vector indicates a network-based attack with low attack complexity and no required privileges. User interaction is required for exploitation.
Which deployments should be prioritized for review?
Prioritize systems running Microsoft 365 Apps for Enterprise, Office LTSC 2021 or 2024 for 32-bit or 64-bit editions, Office 365 for Mac, or Office LTSC for Mac 2021 or 2024. Successful exploitation can affect confidentiality, integrity, and availability at high impact.
How can we determine whether our environment is in scope?
Use software inventory data to identify installations of the listed Microsoft Office and Microsoft 365 products. The provided information does not specify affected version ranges or fixed builds.