Improper authorization in WhatsApp products - CVE-2025-55177
Published: September 1, 2025
Vulnerability identifier: #VU114603
CSH Severity: High
CVSS v4.0: 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/E:A/U:Amber
CVE-ID: CVE-2025-55177
CWE-ID: CWE-285
Exploitation vector: Remote access
Exploit availability:
The vulnerability is being exploited in the wild
Vendor: WhatsApp
Affected software:
WhatsApp Messenger for iOS
WhatsApp Business for iOS
WhatsApp for Mac
WhatsApp Messenger for iOS
WhatsApp Business for iOS
WhatsApp for Mac
Detailed vulnerability description
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).
How to mitigate CVE-2025-55177
Install updates from vendor's website.