CVE-2026-97753: Microsoft Office Excel Remote Code Execution Vulnerability
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Other sources
Microsoft Office Excel 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 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 16.0.10417.20228Patch KB5002928 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.17932.21056
Event History
Frequently Asked Questions
What attacker access is required for exploitation?
The attacker does not need prior privileges, and the attack vector is network-based. However, exploitation requires user interaction.
Which deployments are in scope?
The affected software list includes Microsoft 365 Apps for Enterprise, Microsoft Office 365 for Mac, Office LTSC for Mac 2021 and 2024, Office LTSC 2021 and 2024 for 32-bit editions, Office LTSC 2024 for 64-bit editions, and Microsoft Office Online Server.
What could successful exploitation allow?
Successful exploitation can result in code execution and is rated as having high impact to confidentiality, integrity, and availability.