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CVE-2025-46788: Improper Certificate Validation in Zoom Workplace for Linux

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Overview

CVE-2025-46788 is a high-severity vulnerability affecting Zoom Workplace for Linux. This flaw allows unauthorized users to potentially disclose sensitive information via network access due to improper certificate validation. Given the widespread use of Zoom Workplace, particularly in the current remote-working environment, this vulnerability poses a significant risk to enterprises and organizations globally.

Vulnerability Summary

CVE ID: CVE-2025-46788
Severity: High (7.4 CVSS Score)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Potential system compromise and data leakage

Affected Products

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Product | Affected Versions

Zoom Workplace for Linux | Prior to 6.4.13

How the Exploit Works

The vulnerability stems from improper validation of certificates in Zoom Workplace for Linux. An attacker can exploit this flaw by presenting a forged certificate to the affected application. Due to the lack of proper validation, the application may accept the certificate as genuine, allowing the attacker to achieve a variety of malicious objectives including system compromise and data leakage.

Conceptual Example Code

Consider the following conceptual example where an attacker presents a forged certificate to the affected application:

GET /zoom/workplace/certificate HTTP/1.1
Host: target.zoom.com
Content-Type: application/x-x509-ca-cert
{ "forged_certificate": "..." }

In this example, the malicious user sends a GET request to the target’s Zoom Workplace server with a forged certificate. If the target server fails to validate the certificate properly, it may accept it as genuine, enabling the attacker to exploit the system and potentially disclose sensitive information.

Mitigation

Users are advised to update their Zoom Workplace for Linux to version 6.4.13 or later where this vulnerability has been addressed. In case an immediate update is not possible, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as a temporary mitigation measure. However, these should not be considered as long-term solutions due to their limitations in preventing such attacks.

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Disclaimer:

The information and code presented in this article are provided for educational and defensive cybersecurity purposes only. Any conceptual or pseudocode examples are simplified representations intended to raise awareness and promote secure development and system configuration practices.

Do not use this information to attempt unauthorized access or exploit vulnerabilities on systems that you do not own or have explicit permission to test.

Ameeba and its authors do not endorse or condone malicious behavior and are not responsible for misuse of the content. Always follow ethical hacking guidelines, responsible disclosure practices, and local laws.

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