#VU107341 Spoofing attack in WhatsApp for Desktop - CVE-2025-30401

Vulnerability identifier: #VU107341

Vulnerability risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2025-30401

CWE-ID: CWE-451

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
WhatsApp for Desktop
Client/Desktop applications / Messaging software

Vendor: WhatsApp

Description

The vulnerability allows a remote attacker to perform a spoofing attack.

The vulnerability exists due to incorrect processing of attachments within the application. The interface showed the attachment type based on its MIME type, however selected the file opening handler based on the attachment’s filename extension. A remote attacker can trick the victim into opening a specially crafted attachment file and execute arbitrary code on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

WhatsApp for Desktop: 2.2017.6 - 24.2.76

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External links
https://www.facebook.com/security/advisories/cve-2025-30401
https://www.whatsapp.com/security/advisories/2025/

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.