CVE-2026-66321

Published Aug 4, 2026

Last updated 20 days ago

Overview

Description
Access of resource using incompatible type ('type confusion') in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.
Source
secure@microsoft.com
NVD status
Analyzed
Products
edge_chromium

Risk scores

CVSS 3.1

Type
Primary
Base score
9.6
Impact score
6
Exploitability score
2.8
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Severity
CRITICAL

Weaknesses

secure@microsoft.com
CWE-843

Social media

Hype score
Not currently trending

Configurations

References

Sources include official advisories and independent security research.