CVE-2026-68815: 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-2026-68815?
CVE-2026-68815 has a severity rating of high with a CVSS score of 7.8.
How do I fix CVE-2026-68815?
To fix CVE-2026-68815, update Microsoft Excel and other affected Microsoft Office applications to the latest version provided by Microsoft.
What software is affected by CVE-2026-68815?
CVE-2026-68815 affects various versions of Microsoft Excel, Microsoft 365 Apps for Enterprise, and Microsoft Office LTSC for Mac.
What type of vulnerability is CVE-2026-68815?
CVE-2026-68815 is a heap-based buffer overflow vulnerability that allows remote code execution.
Can CVE-2026-68815 be exploited remotely?
Yes, CVE-2026-68815 can be exploited by an unauthorized attacker to execute code locally on a vulnerable system.