CVE-2026-68801: 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 https://aka.ms/OfficeSecurityReleases - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.5565.1001Patch KB5002903 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.112.26081010
Event History
Frequently Asked Questions
What is the severity of CVE-2026-68801?
CVE-2026-68801 has a high severity rating of 7.8.
How do I fix CVE-2026-68801?
To fix CVE-2026-68801, users should apply the latest security updates provided by Microsoft for affected versions of Excel.
What does CVE-2026-68801 affect?
CVE-2026-68801 affects various versions of Microsoft Excel, including Microsoft Excel 2016, Microsoft 365 Apps for Enterprise, and Office LTSC 2024.
How can CVE-2026-68801 be exploited?
CVE-2026-68801 can be exploited by an unauthorized attacker to execute code locally through a heap-based buffer overflow.
Is there a risk of data loss with CVE-2026-68801?
Yes, the execution of arbitrary code due to CVE-2026-68801 may lead to data corruption or loss.