CVE-2026-70287: 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 16.0.14334.20974 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.17932.21056
Event History
Frequently Asked Questions
Does exploitation require the attacker to authenticate or already have access to the target system?
No. The vulnerability is rated as requiring no privileges, so an attacker does not need to authenticate before attempting exploitation.
Is user interaction required for exploitation?
Yes. The CVSS vector indicates that user interaction is required. The available data does not specify the exact action a user must take.
Which Office deployments are listed as affected?
The affected software list includes Microsoft 365 Apps for Enterprise, Microsoft Word, Office LTSC 2021 and 2024 for 32-bit and 64-bit editions, and Office LTSC for Mac 2021 and 2024.