Remote Code Execution Vulnerability in Microsoft Edge from Microsoft
CVE-2026-58276

7.5HIGH

Key Information:

Vendor

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

What is CVE-2026-58276?

A use after free vulnerability in Microsoft Edge (Chromium-based) can allow an unauthorized attacker to execute arbitrary code over a network. Exploiting this flaw could enable attackers to gain control of the affected system, potentially leading to further exploitation and unauthorized actions. Users are advised to apply the latest security patches as soon as they are available to mitigate any risks associated with this vulnerability.

Affected Version(s)

Microsoft Edge (Chromium-based) 1.0.0.0 < 150.0.4078.48

References

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

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.