A critical security flaw has been discovered in WhatsApp Desktop for Windows, allowing attackers to execute malicious code through seemingly harmless file attachments.
The vulnerability, tracked as CVE-2025-30401, affects versions prior to 2.2450.6 and poses a serious risk to users opening attachments in the app.
The flaw lies in how WhatsApp processes file attachments, displaying them based on the MIME type and opening them based on the file extension, leading to a mismatch vulnerability.
Users are strongly urged to update to version 2.2450.6 or later to mitigate the risk of remote code execution through deceptive attachments.