Spoofing Vulnerability in WhatsApp for Windows by Facebook
CVE-2025-30401

6.7MEDIUM

Key Information:

Vendor: Facebook
Status: WhatSAPp Desktop For Windows
Vendor: CVE Published:; 5 April 2025

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📈 Score: 1,030💰 Ransomware👾 Exploit Exists📰 News Worthy

What is CVE-2025-30401?

CVE-2025-30401 is a spoofing vulnerability found in WhatsApp for Windows, specifically affecting versions prior to 2.2450.6. WhatsApp, developed by Facebook, is a widely used messaging application that facilitates communication through text, voice, and video. This vulnerability poses a risk to users as it allows malicious actors to exploit the way attachments are handled, potentially resulting in the execution of arbitrary code on a recipient's system instead of merely opening the intended file. Such exploitation could lead to serious ramifications for organizations relying on WhatsApp for communication, as it may inadvertently enable unauthorized access to sensitive systems or data.

Technical Details

The vulnerability arises from the way WhatsApp processes file attachments. It relies on MIME types to display attachments correctly; however, it selects the file opening handler based on the file's extension. If an attacker crafts a malicious attachment that tricks the application about its actual type versus its file extension, the recipient may execute harmful code when attempting to open the attachment. This allows the attacker to circumvent the security designed to prevent the execution of unsolicited code and potentially compromise the recipient’s machine.

Potential Impact of CVE-2025-30401

Arbitrary Code Execution: The most significant risk posed by this vulnerability is the potential for attackers to execute arbitrary code on the user's system, leading to unauthorized actions that can compromise sensitive data or system integrity.
Data Breaches: Exploitation of this vulnerability could create pathways for cybercriminals to access confidential information within organizations. Such breaches may lead to loss of proprietary information, customer data, or other sensitive materials.
Increased Malware Propagation: By executing malicious code, this vulnerability could facilitate the spread of additional malware through the compromised systems, leading to broader network infections and increasing the overall security risk for affected organizations.