Use-after-free in Microsoft Edge - CVE-2026-57984
Published: July 15, 2026
Vulnerability identifier: #VU137811
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-2026-57984
CWE-ID: CWE-416
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 use-after-free in Microsoft Edge (Chromium-based) when processing crafted web content. A remote attacker can host a specially crafted website and convince a user to visit it to execute arbitrary code.
User interaction is required, and exploitation requires the user to perform two sequential tap gestures that activate autofill.
Affected software
Microsoft Edge
How to mitigate CVE-2026-57984
Install security update from vendor's website.
Microsoft Edge - update to 150.0.4078.48