CVE-2026-81960: Microsoft Excel Remote Code Execution Vulnerability
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Other sources
Microsoft 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 16.0.5569.1003Patch KB5002904 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.5569.1003Patch KB5002914 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.17932.20960 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.14334.20896 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.20326.20136 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.10417.20204Patch KB5002910
Event History
Frequently Asked Questions
What must an attacker do to exploit this vulnerability?
The attacker must cause a user to interact with malicious content in Microsoft Excel. The CVSS vector indicates local attack vector, no privileges required, and user interaction required.
Which deployments should be reviewed for exposure?
Review systems running Microsoft Office 2016, Microsoft Excel 2016, Microsoft 365 Apps for Enterprise, Office LTSC 2021 for 32-bit or 64-bit editions, Office LTSC 2024 for 32-bit or 64-bit editions, and Office LTSC for Mac 2024.