Type Confusion in Microsoft Edge - CVE-2026-58285
Published: July 17, 2026
Vulnerability identifier: #VU138358
CSH Severity: High
CVSS v4: 7.5 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-58285
CWE-ID: CWE-843
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code.
The vulnerability exists due to access of resource using incompatible type ('type confusion') in Microsoft Edge (Chromium-based) when rendering attacker-controlled web content or opening a specially crafted file. A remote attacker can host a specially crafted website or provide a specially crafted file to execute arbitrary code.
User interaction is required, and successful exploitation requires the victim to perform two sequential taps that cause autofill to activate. A successful exploit can affect resources beyond the security scope of the vulnerable component.
Affected software
Microsoft Edge
How to mitigate CVE-2026-58285
Install security update from vendor's website.
Microsoft Edge - update to 150.0.4078.48