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Multiple Vulnerabilities in Zoom Products

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

Severity Rating: CRITICAL

Software Affected

Zoom Workplace for Windows before version 6.6.0

Zoom Workplace VDI Client for Windows version 6.6.10 and earlier; all versions prior to 6.4.17 and 6.5.15 in their respective branch

Zoom Rooms for Windows before version 6.6.5

Zoom Workplace for Windows before version 6.6.11 in the 6.6.x branch

Zoom Meeting SDK for Windows before version 6.6.11 in the 6.6.x branch

Overview

Multiple vulnerabilities have been reported in Zoom products that could be exploited by an attacker to gain elevated privileges on the targeted system.

Target Audience:

All end-user organisations and individuals using Zoom applications.

Risk Assessment:

High risk of data manipulation and unauthorized access to sensitive information.

Impact Assessment:

Potential compromise of application integrity and service disruption.

Description

Zoom Video Communications products are cloud-based communication and collaboration tools used for online meetings, messaging, webinars, and business communication.

Multiple vulnerabilities exist in Zoom products due to improper privilege management, improper input validation and improper checks for minimum version for update functionality.

Successful exploitation of these vulnerabilities could allow a local attacker to gain elevated privileges on the targeted system.

Solution

Apply appropriate updates as mentioned by the vendor given below:

https://www.zoom.com/en/trust/security-bulletin/zsb-26005/?ampDeviceId=95a6e736-e8fe-469e-b84f-6c743a8150d5&SessionId=1773122794664

https://www.zoom.com/en/trust/security-bulletin/zsb-26004/?ampDeviceId=95a6e736-e8fe-469e-b84f-6c743a8150d5&SessionId=1773122794664

https://www.zoom.com/en/trust/security-bulletin/zsb-26003/?ampDeviceId=95a6e736-e8fe-469e-b84f-6c743a8150d5&SessionId=1773122794664

https://www.zoom.com/en/trust/security-bulletin/zsb-26002/?ampDeviceId=95a6e736-e8fe-469e-b84f-6c743a8150d5&SessionId=1773122794664

Vendor Information

Zoom

https://www.zoom.com/en/trust/security-bulletin/

References

 

https://www.zoom.com/en/trust/security-bulletin/zsb-26005/?ampDeviceId=95a6e736-e8fe-469e-b84f-6c743a8150d5&SessionId=1773122794664

https://www.zoom.com/en/trust/security-bulletin/zsb-26004/?ampDeviceId=95a6e736-e8fe-469e-b84f-6c743a8150d5&SessionId=1773122794664

https://www.zoom.com/en/trust/security-bulletin/zsb-26003/?ampDeviceId=95a6e736-e8fe-469e-b84f-6c743a8150d5&SessionId=1773122794664

https://www.zoom.com/en/trust/security-bulletin/zsb-26002/?ampDeviceId=95a6e736-e8fe-469e-b84f-6c743a8150d5&SessionId=1773122794664

CVE Name

CVE-2026-30900

CVE-2026-30901

CVE-2026-30902

CVE-2026-30903

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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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