CVE-2026-47635 Microsoft Outlook and Word Remote Code Execution Vulnerability
An attacker can execute arbitrary code locally via a heap-based buffer overflow in Microsoft Office applications.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-47635?
CVE-2026-47635 is a high-severity memory corruption vulnerability in Microsoft Office 2024, published on 9 Jun 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.
Weakness: CWE-122
Which versions are affected by CVE-2026-47635?
It affects 1 product.
Products include Microsoft Office 2024.
How do I fix CVE-2026-47635?
No fix has been published for CVE-2026-47635 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-2026-47635 being exploited?
There is no known exploitation of CVE-2026-47635 in the wild and no public exploit code.
Sources
Also known as GHSA-qx8j-c4w9-7qr2.