CVE-2026-108440: Microsoft Office Word Remote Code Execution Vulnerability
Microsoft Office Word Remote Code Execution Vulnerability
Other sources
Stack-based buffer overflow 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 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 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.114.26101123
Event History
Frequently Asked Questions
Which Office deployments are identified as affected?
The affected products listed are Microsoft 365 Apps for Enterprise; Office LTSC 2021 and 2024 for 32-bit and 64-bit editions; Office LTSC for Mac 2021 and 2024; and Office 365 for Mac.
Does exploitation require an authenticated account or user interaction?
The severity vector indicates that an attacker does not need privileges, but user interaction is required. The attack vector is network-based and the described issue permits code execution.
What is the potential impact of a successful exploit?
Successful exploitation can allow an unauthorized attacker to execute code. The severity vector rates confidentiality, integrity, and availability impact as high.