CVE-2026-88150: Microsoft Office Word Remote Code Execution Vulnerability
Microsoft Office Word Remote Code Execution Vulnerability
Other sources
Use of uninitialized resource in Microsoft Office Word allows an unauthorized attacker to execute code over a network.
— 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
Which Office deployments are listed as affected?
The affected products listed are Microsoft 365 Apps for Enterprise, Microsoft Office 365 for Mac, Office LTSC 2024 for 32-bit and 64-bit editions, Office LTSC for Mac 2024, Office LTSC 2021 for 32-bit and 64-bit editions, and Office LTSC for Mac 2021.
Does an attacker need an account or other privileges to exploit this issue?
No privileges are required according to the CVSS vector (PR:N). Exploitation does require user interaction (UI:R), so an attacker would need a user to interact with attacker-supplied content.
What is the potential security impact after successful exploitation?
The CVSS vector rates confidentiality, integrity, and availability impact as high. Successful exploitation can therefore expose data, allow modification, and disrupt availability in the affected security scope.