CVE-2026-108446: Microsoft Office Excel Remote Code Execution Vulnerability
Microsoft Office Excel Remote Code Execution Vulnerability
Other sources
Use after free in Microsoft Office Excel 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 16.114.26101123 - 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 16.0.10417.20228Patch KB5002928
Event History
Frequently Asked Questions
Which deployments are in scope?
The affected software list includes Microsoft 365 Apps for Enterprise; Microsoft Office 365 for Mac; Office LTSC 2021 for 64-bit editions and for Mac; Office LTSC 2024 for 32-bit, 64-bit, and Mac editions; and Microsoft Office Online Server.
Does exploitation require prior authentication or user interaction?
The supplied vector indicates no privileges are required, but user interaction is required. The attack vector is network-based and the described flaw can lead to code execution.
What is the potential impact if exploitation succeeds?
The provided severity vector rates confidentiality, integrity, and availability impact as high. Successful exploitation could therefore result in code execution with significant impact to affected systems and data.