CVE-2026-83831: Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability

Overview

Severity

N/A

Exploit Status

Not Exploited

Exploitation Likelihood

Less Likely

Patch Tuesday

2026-Oct

Released

2026-10-16

Description

Double free in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.

FAQ

According to the CVSS metric, the attack vector is network (AV:N) and user interaction is required (UI:R). What is the target context of the remote code execution? This attack requires a user to open a specially crafted file from the attacker to initiate remote code execution.

Acknowledgments

yhw, Antti Levomäki with Forcepoint, Christian Jalio with Forcepoint, Anonymous

Revision History

• 2026-10-16: Information published.