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WhatsApp Security Advisories

2025 Updates

CVE-2025-30401

A spoofing issue in WhatsApp for Windows prior to version 2.2450.6 displayed attachments according to their MIME type but selected the file opening handler based on the attachment’s filename extension. A maliciously crafted mismatch could have caused the recipient to inadvertently execute arbitrary code rather than view the attachment when manually opening the attachment inside WhatsApp.

Acknowledgements: External Researcher via Meta Bug Bounty submission

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