CVE-2026-55141: Microsoft Excel Remote Code Execution Vulnerability
Microsoft Excel Remote Code Execution Vulnerability
Other sources
Stack-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
— 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 16.0.10417.20175Patch KB5002884 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.5561.1001Patch KB5002886 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.111.26071215
Event History
Frequently Asked Questions
What is the severity of CVE-2026-55141?
CVE-2026-55141 has a high severity rating of 7.8.
What is CVE-2026-55141?
CVE-2026-55141 is a Microsoft Excel Remote Code Execution Vulnerability that allows unauthorized execution of code via a stack-based buffer overflow.
Which software is affected by CVE-2026-55141?
CVE-2026-55141 affects Microsoft Excel 2016, Microsoft 365 Apps for Enterprise, Microsoft Office Online Server, and other versions of Microsoft Office.
How can I mitigate CVE-2026-55141?
To mitigate CVE-2026-55141, it is recommended to apply security updates and patches provided by Microsoft.
What type of attack does CVE-2026-55141 enable?
CVE-2026-55141 enables remote code execution attacks where an attacker can run malicious code on the affected system.