All vulnerabilities
CVE-2026-83831

Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability

Microsoft Microsoft Edge (Chromium-based)Applications & CMS
Open in ThreatlineRecord JSON
CVSS
8.8High
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)No scoreNo FIRST EPSS score in this snapshot yet
Fixed in154.0.4258.48Fixed versionCVE List
Published27 Oct 2026Updated 27 Oct 2026CVE List

What fixes it

  • 154.0.4258.48Microsoft Edge (Chromium-based)CVE List

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Vendor and government advisories 1

Vendors that say their products are affected, and agencies that issued alerts. Check each for the fixed release of the product you run.

Reports 1

1 outlet mention it. Reports are not confirmation; each links to its source.

Description

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

Text from CVE List

Affected versions 1

  • Microsoft Edge (Chromium-based)affected: 1.0.0.0 before 154.0.4258.48CVE List

References 1