CVE-2025-53733 Microsoft Word Remote Code Execution Vulnerability
An integer overflow in Microsoft Word allows an attacker to execute arbitrary code locally via a malicious document.
- 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-2025-53733?
CVE-2025-53733 is a high-severity vulnerability in Microsoft 365 Apps, published on 12 Aug 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Incorrect conversion between numeric types in Microsoft Office Word allows an unauthorized attacker to execute code locally.
Weakness: CWE-681
Which versions are affected by CVE-2025-53733?
It affects 6 products.
Products include Microsoft 365 Apps, Microsoft Office, Microsoft Office Long Term Servicing Channel, Microsoft Sharepoint Enterprise Server, Microsoft Sharepoint Server, Microsoft Word.
How do I fix CVE-2025-53733?
No fix has been published for CVE-2025-53733 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-53733 being exploited?
There is no known exploitation of CVE-2025-53733 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-g9cg-chvx-p8m5.