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Remote Code Execution Vulnerabilities in Microsoft Edge

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

Severity Rating: HIGH

Software Affected

Microsoft Edge version prior to 143.0.3650.96

Overview

Multiple vulnerabilities have been reported in Microsoft Edge which could allow a remote 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 full system compromise or data theft.

Impact Assessment:

Potential for arbitrary code execution 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.

These vulnerabilities exists in Microsoft Edge due to an out-of-bounds read and write in V8 or use-after-free in WebGPU. A remote attacker could exploit these vulnerabilities by persuading a victim to visit a specially crafted webpage.

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

Solution

Apply appropriate updates as mentioned in:

https://learn.microsoft.com/en-us/deployedge/microsoft-edge-relnotes-security#december-18-2025

Vendor Information

Microsoft

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-14765

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-14766

References

Microsoft

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-14765

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-14766

CVE Name

CVE-2025-14765

CVE-2025-14766

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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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