CVE-2026-81950: Microsoft Excel Remote Code Execution Vulnerability
Double free 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 16.0.20326.20136 - Upgrade
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Fixed in 16.0.14334.20896 - 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 does an attacker need to exploit this vulnerability?
The attacker needs local access and user interaction. No privileges are required before exploitation, according to the supplied CVSS vector.
Which environments are identified as affected?
The affected software list includes Microsoft Office 2016, Microsoft Excel 2016, Microsoft 365 Apps for Enterprise, Microsoft Office 365 for Mac, Microsoft Office LTSC for Mac 2021 and 2024, and Microsoft Office LTSC 2024 for 32-bit and 64-bit editions.
What impact could successful exploitation have?
Successful exploitation can allow code execution locally. The supplied severity vector indicates high impact to confidentiality, integrity, and availability.