Main Vulnerability Database Vulnerabilities #VU114603

Improper authorization in WhatsApp products - CVE-2025-55177

Published: September 1, 2025

Vulnerability identifier: #VU114603

CSH Severity: High

CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2025-55177

CWE-ID: CWE-285

Exploitation vector: Remote access

Exploit availability: The vulnerability is being exploited in the wild

Vulnerability details

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to improper authorization of linked device synchronization messages. A remote attacker can force the application to process content from an arbitrary URL on a target device.

Note, the vulnerability is being actively exploited in the wild in conjunction with #VU114314 (CVE-2025-43300).

Affected software

WhatsApp Messenger for iOS
WhatsApp Business for iOS
WhatsApp for Mac

How to mitigate CVE-2025-55177

Install updates from vendor's website.

WhatsApp Messenger for iOS - update to 25.21.73
WhatsApp Business for iOS - update to 2.25.21.78
WhatsApp for Mac - update to 2.25.21.78

External References

Related Security Bulletins