CVE-2026-58289 CRITICAL

CVE-2026-58289: Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability

Vendor Microsoft

Product Microsoft Edge (Chromium-based)

Weakness CWE-843

Published July 3, 2026

Last update July 3, 2026

View on NVD All CVEs

CVSS base score

9.0/10

Attack vector Network

Attack complexity High

Privileges required None

User interaction None

Confidentiality High

Integrity High

CVSS vector

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

What the vulnerability does

01Description

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

Key dates

02Disclosure timeline

July 3, 2026 CVE published

July 3, 2026 Record updated

External resources

03References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2026-58289 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/843.html AskarLabs — CWE-843 write-up Access of Resource Using Incompatible Type ('Type Confusion')

Related vulnerabilities

Identifiers

CVE CVE-2026-58289

CWE CWE-843

CVSS 9.0 / CRITICAL

Affected versions