Type Confusion in Microsoft Edge - CVE-2026-70339
Published: August 11, 2026
Vulnerability identifier: #VU141492
CSH Severity: Medium
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-70339
CWE-ID: CWE-843
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute 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. A remote attacker can trick the victim into visiting a crafted webpage and performing two tap gestures to execute code.
User interaction is required for autofill to activate.
Affected software
Microsoft Edge
How to mitigate CVE-2026-70339
Install security update from vendor's website.
Microsoft Edge - update to 151.0.4129.78