CVE-2026-97781 Microsoft Office OneNote Remote Code Execution Vulnerability
An attacker can execute arbitrary code remotely via command injection in Microsoft Office OneNote, requiring users to apply vendor patches.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-97781?
CVE-2026-97781 is a high-severity command injection vulnerability in Microsoft 365 Apps, published on 13 Oct 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Improper neutralization of special elements used in a command ('command injection') in Microsoft Office OneNote allows an unauthorized attacker to execute code over a network.
Weakness: CWE-77
Which versions are affected by CVE-2026-97781?
It affects 1 product.
Products include Microsoft 365 Apps.
How do I fix CVE-2026-97781?
No fix has been published for CVE-2026-97781 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-97781 being exploited?
There is no known exploitation of CVE-2026-97781 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-g8p2-qfh9-mhqc.