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Remote Code Execution Vulnerability in Microsoft Edge (Chromium-based)

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

Severity Rating: HIGH

Software Affected

Microsoft Edge versions prior to 144.0.3719.115

Overview

A vulnerability has been reported in Microsoft Edge, which could allow an attacker to execute arbitrary code on the targeted system.

Target Audience:

All end user organizations and individuals using Microsoft Edge.

Risk Assessment:

High risk of unauthorized access, system compromise, and data exposure.

Impact Assessment:

Potential for remote code execution, sensitive data exposure.

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.

Remote Code Execution Vulnerability exists in Microsoft Edge due to Heap buffer overflow in libvpx. A remote attacker could exploit this vulnerability by persuading a victim to visit a specially crafted web page.

Successful exploitation of this vulnerability could allow a remote attacker to execute arbitrary code on the targeted system.

Solution

Apply appropriate fix/patches as mentioned:

https://learn.microsoft.com/en-us/DeployEdge/microsoft-edge-relnotes-security#february-5-2026

Vendor Information

Microsoft

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-1861

References

Microsoft

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-1861

CVE Name

CVE-2026-1861

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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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