CVE-2026-68816: 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 16.0.5565.1001Patch 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-2026-68816?
CVE-2026-68816 has a high severity rating of 7.8.
What effect does CVE-2026-68816 have on Microsoft Excel?
CVE-2026-68816 allows an unauthorized attacker to execute code locally due to a stack-based buffer overflow.
Which software versions are affected by CVE-2026-68816?
Microsoft Excel 2016, Microsoft 365 Apps for Enterprise, Microsoft Office LTSC 2021, and several editions of Microsoft Office LTSC for Mac are affected by CVE-2026-68816.
How can I fix CVE-2026-68816?
To mitigate CVE-2026-68816, update Microsoft Excel and related applications to the latest patches provided by Microsoft.
What vulnerability type is CVE-2026-68816?
CVE-2026-68816 is classified as a Buffer Overflow vulnerability.