MICROSOFT-CVE-2026-66321

HIGH7.4

Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability

Published Jul 31, 2026

Modified 2 weeks ago

Details

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

References

ADVISORY

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66321

CVSS Analysis

CVSS v2.0

7.4

Upstream

CVE-2026-66321

Ecosystems

Timeline

PublishedJul 31, 2026

ModifiedJul 31, 2026