CVE-2026-68817: 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-2026-68817?
The severity of CVE-2026-68817 is rated as high with a score of 7.8.
How do I fix CVE-2026-68817?
To fix CVE-2026-68817, apply the latest security updates from Microsoft for affected versions of Excel.
What types of software are affected by CVE-2026-68817?
CVE-2026-68817 affects various versions of Microsoft Excel including 2016, Microsoft 365 Apps for Enterprise, and Office LTSC editions.
What is the nature of the vulnerability in CVE-2026-68817?
CVE-2026-68817 is a stack-based buffer overflow vulnerability that allows unauthorized attackers to execute code locally.
What are the potential impacts of CVE-2026-68817?
The potential impacts of CVE-2026-68817 include unauthorized code execution which can lead to data compromise and system control.