CVE-2025-29842 UrlMon Security Feature Bypass Vulnerability
An attacker can bypass security features in Windows UrlMon by exploiting acceptance of extraneous untrusted data.
- 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-2025-29842?
CVE-2025-29842 is a high-severity vulnerability in Microsoft Windows 10 1507, published on 13 May 2025. 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
Acceptance of extraneous untrusted data with trusted data in UrlMon allows an unauthorized attacker to bypass a security feature over a network.
Which versions are affected by CVE-2025-29842?
It affects 13 products.
Products include Microsoft Windows 10 1507, Microsoft Windows 10 1607, Microsoft Windows 10 1809, Microsoft Windows 10 21h2, Microsoft Windows 10 22h2, Microsoft Windows 11 22h2 and 7 more.
How do I fix CVE-2025-29842?
No fix has been published for CVE-2025-29842 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-29842 being exploited?
There is no known exploitation of CVE-2025-29842 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Windows 10 1507
- CVE-2017-8543 Microsoft Windows Search Remote Code Execution
- CVE-2025-33053 Microsoft Windows External Control of File Name or Path
- CVE-2025-33073 Microsoft Windows SMB Client Improper Access Control
- CVE-2024-49039 Microsoft Windows Task Scheduler Privilege Escalation
- CVE-2024-43461 Microsoft Windows MSHTML Platform Spoofing
Sources
Also known as GHSA-cq8m-2x25-mgg8.