CVE-2026-97759: 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 16.0.17932.21056 - 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?
The attack vector is network-based and requires user interaction. The available data does not specify the exact delivery mechanism or user action required.
Which environments should be prioritized for review?
Review deployments of Microsoft 365 Apps for Enterprise, Microsoft Office 365 for Mac, Microsoft Office LTSC for Mac 2021, Microsoft Office LTSC for Mac 2024, and Microsoft Office LTSC 2024 on both 32-bit and 64-bit editions. The vulnerability can result in code execution with high confidentiality, integrity, and availability impact.
Is authentication or prior access required?
No privileges are required for exploitation according to the provided CVSS vector. An attacker is described as unauthorized, but user interaction is required.