CVE-2026-70339 MEDIUM

CVE-2026-70339: Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability

Vendor Microsoft

Product Microsoft Edge (Chromium-based)

Weakness CWE-843

Published August 11, 2026

Last update August 14, 2026

View on NVD All CVEs

CVSS base score

5.4/10

Attack vector Network

Attack complexity Low

Privileges required None

User interaction Required

Confidentiality Low

Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N/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

August 11, 2026 CVE published

August 14, 2026 Record updated

External resources

03References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2026-70339 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-2026-70339

CWE CWE-843

CVSS 5.4 / MEDIUM

Affected versions