CVE-2026-68794: 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 16.112.26081010 - 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 16.0.5565.1001Patch KB5002903
Event History
Frequently Asked Questions
What is the severity of CVE-2026-68794?
CVE-2026-68794 has a severity rating of high with a score of 7.8.
How do I fix CVE-2026-68794?
To fix CVE-2026-68794, ensure that your Microsoft Excel installations are updated to the latest versions provided by Microsoft.
What systems are affected by CVE-2026-68794?
CVE-2026-68794 affects various versions of Microsoft Excel, including Excel 2016, Microsoft 365 Apps for Enterprise, and Office LTSC for both Windows and Mac.
What type of vulnerability is CVE-2026-68794?
CVE-2026-68794 is a heap-based buffer overflow vulnerability that allows unauthorized code execution.
What are the potential impacts of CVE-2026-68794?
Exploitation of CVE-2026-68794 could lead to remote code execution, allowing attackers to execute malicious code on affected systems.