Input validation error in Microsoft Edge - CVE-2025-59251
Published: September 24, 2025
Vulnerability identifier: #VU116086
CSH Severity: High
CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2025-59251
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can trick the victim into opening a specially crafted web page and execute arbitrary code on the system.
Affected software
Microsoft Edge
How to mitigate CVE-2025-59251
Install updates from vendor's website.
Microsoft Edge - update to 140.0.3485.81