CVE-2026-69556: 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 16.0.5569.1002Patch KB5002923 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.17932.20960 - 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 must an attacker do to exploit this vulnerability?
Exploitation requires user interaction. An attacker would need to induce a user to interact with malicious content in Microsoft Word; no attacker privileges are required.
Which Word deployments are identified as affected?
The affected software list includes Word 2016, Microsoft 365 Apps for Enterprise, Office 365 for Mac, Office LTSC for Mac 2024, and Office LTSC 2021 and 2024 for both 32-bit and 64-bit editions.
What is the potential impact if exploitation succeeds?
Successful exploitation can allow code execution. The supplied severity vector also rates confidentiality, integrity, and availability impact as high.