CVE-2026-66807: Microsoft Office Graphics Component Remote Code Execution Vulnerability
Microsoft Office Graphics Component Remote Code Execution Vulnerability
Other sources
Stack-based buffer overflow in Microsoft Office 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 16.112.26081010
Event History
Frequently Asked Questions
What is the severity of CVE-2026-66807?
The severity of CVE-2026-66807 is rated high with a score of 7.8.
How can I fix CVE-2026-66807?
To fix CVE-2026-66807, ensure that Microsoft Office and related applications are updated to the latest version as per vendor recommendations.
What types of software are affected by CVE-2026-66807?
CVE-2026-66807 affects various versions of Microsoft 365 Apps for Enterprise, Microsoft Office LTSC 2024, Microsoft Office LTSC 2021, and Microsoft Office 2019.
What is the main cause of CVE-2026-66807?
CVE-2026-66807 is caused by a stack-based buffer overflow in the Microsoft Office Graphics Component.
Can CVE-2026-66807 lead to remote code execution?
Yes, CVE-2026-66807 allows an unauthorized attacker to execute code locally through the vulnerability.