CVE-2026-96995 Microsoft Office Word Elevation of Privilege Vulnerability
A stack-based buffer overflow in Microsoft Office Word allows an authorized local attacker 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-2026-96995?
CVE-2026-96995 is a high-severity memory corruption 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
Stack-based buffer overflow in Microsoft Office Word allows an authorized attacker to elevate privileges locally.
Which versions are affected by CVE-2026-96995?
It affects 4 products.
Products include Microsoft 365 Apps, Microsoft Microsoft 365, Microsoft Office 2021, Microsoft Office 2024.
How do I fix CVE-2026-96995?
No fix has been published for CVE-2026-96995 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-96995 being exploited?
There is no known exploitation of CVE-2026-96995 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-5j52-6gp9-vxj8.