CVE-2026-97774 Microsoft Office Click-To-Run Elevation of Privilege Vulnerability
A local attacker can exploit a race condition in Microsoft Office Click-To-Run to elevate privileges.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-97774?
CVE-2026-97774 is a high-severity vulnerability in Microsoft 365 Apps, published on 13 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Time-of-check time-of-use (toctou) race condition in Microsoft Office Click-To-Run allows an authorized attacker to elevate privileges locally.
Weakness: CWE-367
Which versions are affected by CVE-2026-97774?
It affects 1 product.
Products include Microsoft 365 Apps.
How do I fix CVE-2026-97774?
No fix has been published for CVE-2026-97774 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-97774 being exploited?
There is no known exploitation of CVE-2026-97774 in the wild and no public exploit code.
Other vulnerabilities in Microsoft 365 Apps
- CVE-2024-21413 Microsoft Outlook Improper Input Validation
- CVE-2023-23397 Microsoft Office Outlook Privilege Escalation
- CVE-2024-38189 Microsoft Project Remote Code Execution Vulnerability
- CVE-2023-35311 Microsoft Outlook Security Feature Bypass
- CVE-2026-21514 Microsoft Office Word Reliance on Untrusted Inputs in a Security Decision
Sources
Also known as GHSA-x7rq-wc5m-cvmj.