CVE-2026-108426: 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 does an attacker need to exploit this vulnerability?
The vulnerability is network-reachable and requires no attacker privileges, but it requires user interaction. An attacker would need to induce a user to interact with malicious content in Microsoft Word.
Which deployments should be assessed?
Assess Microsoft 365 Apps for Enterprise and Microsoft Office LTSC 2021 and 2024 installations, including both 32-bit and 64-bit LTSC editions listed in the affected software.
What is the potential impact of successful exploitation?
Successful exploitation can allow unauthorized remote code execution. The reported impact includes high confidentiality, integrity, and availability consequences.