Remote Code Execution Vulnerability in Microsoft Edge (Chromium-based)
CVE-2026-66798

4.3MEDIUM

Key Information:

Vendor

Microsoft
Status
Microsoft Edge (chromium-based)
Vendor
CVE Published:
28 August 2026

What is CVE-2026-66798?

A use after free vulnerability in Microsoft Edge (Chromium-based) facilitates unauthorized code execution by attackers through network interactions, potentially compromising user systems. This flaw underscores the importance of applying security patches promptly to mitigate associated risks.

Affected Version(s)

Microsoft Edge (Chromium-based) 1.0.0.0 < 152.0.4191.53

References

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

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.