Remote Code Execution Vulnerability in Microsoft Edge by Microsoft
CVE-2026-83831

8.8HIGH

Key Information:

Vendor

Microsoft

Vendor
CVE Published:
27 October 2026

What is CVE-2026-83831?

A vulnerability exists in Microsoft Edge (Chromium-based) due to a double-free memory management error, which can be exploited by unauthorized attackers. By crafting a malicious network response, an attacker could execute arbitrary code on the victim's system, potentially allowing them to gain control over the affected browser. This security flaw underscores the importance of keeping software up-to-date to mitigate security risks.

Affected Version(s)

Microsoft Edge (Chromium-based) 1.0.0.0 < 154.0.4258.48

References

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

.