CVE-2026-66321

Microsoft · Published July 31, 2026

7.4

CVSS v3.1

HIGH

Patch availableGet patch

Description

Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability. Access of resource using incompatible type ('type confusion') in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.

Affected Products

Microsoft Edge (Chromium-based)

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N/E:U/RL:O/RC:C