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Multiple Vulnerabilities in Microsoft Edge 

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

Severity Rating: CRITICAL

Software Affected

Microsoft Edge versions prior to 140.0.3485.81

Overview

Multiple vulnerabilities have been reported in Microsoft Edge, which could allow a remote attacker to bypass security restrictions and execute arbitrary code on the targeted system.

Target Audience:

All end-user organisations and individuals using Microsoft Edge.

Risk Assessment:

High risk of remote code execution.

Impact Assessment:

Potential for unauthorized data access or service disruption.

Description

Microsoft Edge (Chromium-based) 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.

Multiple vulnerabilities exist in Microsoft Edge due to use-after-free in Dawn and WebRTC, type confusion in V8, and Heap buffer overflow in ANGLE. A remote attacker could exploit these vulnerabilities via specially crafted web content.

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

Note: CVE-2025-10585 is being actively exploited in the wild.

Solution

Apply appropriate updates as mentioned by the vendor:

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

References

Microsoft

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

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-10500

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-10501

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-10502

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-10585

CVE Name

CVE-2025-10500

CVE-2025-10501

CVE-2025-10502

CVE-2025-10585

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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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