Use-after-free in Microsoft Edge - CVE-2026-57981
Published: July 17, 2026
Vulnerability identifier: #VU138352
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-2026-57981
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 rendering attacker-controlled web content. A remote attacker can host a specially crafted website and convince the user to visit it to execute arbitrary code.
User interaction is required, and exploitation requires the user to visit the attacker-controlled webpage and perform two tap gestures that cause autofill to activate.
Affected software
Microsoft Edge
How to mitigate CVE-2026-57981
Install security update from vendor's website.
Microsoft Edge - update to 150.0.4078.48