CVE-2026-77901: Microsoft Office Word Remote Code Execution Vulnerability
Microsoft Office Word Remote Code Execution Vulnerability
Other sources
Null pointer dereference 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 16.0.5569.1000Patch KB5002923 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.17932.20976 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.14334.20906 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.20326.20138 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.10417.20207
Event History
Frequently Asked Questions
Which Office deployments are identified as affected?
The affected products listed are 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.
Does exploitation require prior authentication or elevated privileges?
No. The supplied vector indicates network-based exploitation with low attack complexity and no privileges required, although user interaction is required.
What is the potential impact of a successful exploit?
A successful exploit could allow an unauthorized attacker to execute code and has high potential impact on confidentiality, integrity, and availability.