CVE-2026-40419: Microsoft Office Click-To-Run Elevation of Privilege Vulnerability
Microsoft Office Click-To-Run Elevation of Privilege Vulnerability
Other sources
Use after free in Microsoft Office allows an authorized attacker to elevate privileges 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
Event History
Frequently Asked Questions
What is the severity of CVE-2026-40419?
The severity of CVE-2026-40419 is rated high with a score of 7.8.
How do I fix CVE-2026-40419?
To fix CVE-2026-40419, apply the latest security updates provided by Microsoft for affected Office products.
Which Microsoft Office products are affected by CVE-2026-40419?
CVE-2026-40419 affects various Microsoft Office products including Microsoft 365 Apps and Microsoft Office LTSC 2021 and 2024.
What type of vulnerability is CVE-2026-40419?
CVE-2026-40419 is categorized as a Use After Free vulnerability allowing privilege elevation.
Can an attacker exploit CVE-2026-40419 remotely?
No, CVE-2026-40419 requires local access for an attacker to exploit the vulnerability.