CVE-2026-70269: 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
Which environments should be assessed for exposure?
Assess systems running Microsoft 365 Apps for Enterprise; Office 365 for Mac; Office LTSC for Mac 2021 or 2024; or Office LTSC 2021 or 2024 for 32-bit or 64-bit editions.
Does an attacker need credentials or user interaction to exploit this issue?
The CVSS vector indicates no privileges are required and no user interaction is required. Exploitation is network-based, but the attack complexity is rated high.
What is the potential impact of successful exploitation?
Successful exploitation can result in code execution and is rated as having high impact to confidentiality, integrity, and availability.