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Security Restriction Bypass Vulnerability in Microsoft Edge (Chromium-based) 

Indian – Computer Emergency Response Team (https://www.cert-in.org.in)

Severity Rating: HIGH

Software Affected

Microsoft Edge (Chromium-based) version prior to 143.0.3650.139

Overview

A vulnerability has been reported in Microsoft Edge (Chromium-based) which could allow a remote attacker to bypass security restrictions on the targeted system.

Target Audience:

All end-user organizations and individuals using Microsoft Edge.

Risk Assessment:

High risk of Security boundary bypass enabling unauthorized access and potential data theft.

Impact Assessment:

Potential for security restriction bypass or sensitive data disclosure.

Description

Microsoft Edge is a web browser developed by Microsoft using the Chromium engine, offering fast performance, enhanced security, and compatibility with modern web standards while integrating with Microsoft services.

This vulnerability exists in Microsoft Edge (Chromium-based) due to Insufficient policy enforcement in WebView tag. A remote attacker could exploit this vulnerability by persuading a victim to visit a specially crafted webpage.

Successful exploitation of this vulnerability could allow a remote attacker to bypass security restrictions on the targeted system.

Solution

Apply appropriate updates as mentioned in:

https://learn.microsoft.com/en-us/DeployEdge/microsoft-edge-relnotes-security#january-9-2026

Vendor Information

Microsoft

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-0628

References

Microsoft

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-0628

CVE Name

CVE-2026-0628

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Thanks and Regards,

CERT-In

Incident Response Help Desk

e-mail: incident@cert-in.org.in

Phone: +91-11-22902657

Toll Free Number: 1800-11-4949

Toll Free Fax : 1800-11-6969

Web: http://www.cert-in.org.in

PGP Fingerprint: A768 083E 4475 5725 B81A A379 2156 C0C0 B620 D0B4

PGP Key information:

https://www.cert-in.org.in/s2cMainServlet?pageid=CONTACTUS

Postal address:

Indian Computer Emergency Response Team (CERT-In)

Ministry of Electronics and Information Technology

Government of India

Electronics Niketan

6, C.G.O. Complex

New Delhi-110 003

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