National CSIRT-CY | National Computer Security Incident Response Team of Cyprus

Η Εθνική Ομάδα Αντιμετώπισης Ηλεκτρονικών Επιθέσεων προβλέπει την αύξηση της ηλεκτρονικής ασφαλείας ενισχύοντας την προστασία του κυβερνοχώρου των Εθνικών Κρίσιμων Πληροφοριακών Υποδομών, των τραπεζών και των παροχών επικοινωνίας της Κυπριακής Δημοκρατίας.

WhatsApp Zero-Click exploit affecting iOS and macOS

05 Σεπτεμβρίου 2025

The Digital Security Authority (DSA) wants to bring to your attention a vulnerability affecting WhatsApp. 

 

Technical Details

A vulnerability with a CVSS score of 8.0 has been disclosed regarding WhatsApp instances in iOS and macOS devices.
The flaw allows a malicious actor to target unrelated victims to process content from an arbitrary url.
The vulnerability is zero click which means that the exploit does not require user interaction.
This vulnerability has been discovered by researchers within the WhatsApp security team.
WhatsApp recommends users to maintain their operating systems up to date.

 

Affected Products

- WhatsApp for iOS version 2.25.21.73
- WhatsApp Business for iOS version 2.25.21.78
- WhatsApp for Mac version 2.25.21.78

 

Recommendations

The Digital Security Authority recommends to make sure that your apple devices operating systems as well as WhatsApp are updated to the latest versions.

 

References

  1. Common Vulnerabilities & Exposures

 

The information presented in this report is based on available data up to the 1st of September 2025. 

 [ Get the report  in .PDF ]

 

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