CVE-2025-49756 Office Developer Platform Security Feature Bypass Vulnerability
An authorized attacker can bypass security features in Microsoft Office Developer Platform due to weak cryptography.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-49756?
CVE-2025-49756 is a low-severity vulnerability in Microsoft 365 Apps, published on 8 Jul 2025. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
Use of a broken or risky cryptographic algorithm in Office Developer Platform allows an authorized attacker to bypass a security feature locally.
Weakness: CWE-327
Which versions are affected by CVE-2025-49756?
It affects 1 product.
Products include Microsoft 365 Apps.
How do I fix CVE-2025-49756?
No fix has been published for CVE-2025-49756 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-49756 being exploited?
There is no known exploitation of CVE-2025-49756 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-gfj7-mwjw-jmhf.