Remote Code Execution Vulnerability in Microsoft Edge by Microsoft
CVE-2026-50521

8.3HIGH

Key Information:

Vendor

Microsoft
Status
Microsoft Edge (chromium-based)
Vendor
CVE Published:
1 July 2026

What is CVE-2026-50521?

A use after free vulnerability in Microsoft Edge (Chromium-based) allows an authorized attacker to potentially execute arbitrary code on a user's system via a network. This flaw could be exploited to compromise the integrity and confidentiality of user data, emphasizing the importance of promptly updating the browser to the latest secure version. For further details and mitigation strategies, refer to the official advisory.

Affected Version(s)

Microsoft Edge (Chromium-based) 1.0.0.0 < 149.0.4022.68

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE...
vendor-advisorypatch

CVSS V3.1

Score:
8.3
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.