Remote Code Execution Vulnerability in Microsoft Edge by Microsoft
CVE-2026-85890

8.8HIGH

Key Information:

Vendor

Microsoft
Status
Microsoft Edge (chromium-based)
Vendor
CVE Published:
29 October 2026

What is CVE-2026-85890?

A critical vulnerability in Microsoft Edge (Chromium-based) exposes users to unauthorized remote code execution. This flaw is caused by a double free issue, which can allow an attacker to execute arbitrary code on a victim's system over the network. The vulnerability highlights the importance of timely software updates to mitigate security risks. Users are strongly advised to apply the latest security patches provided by Microsoft to protect against potential exploitation.

Affected Version(s)

Microsoft Edge (Chromium-based) 1.0.0.0 < 154.0.4258.37

References

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

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.