SB2025090130 - Improper authorization in WhatsApp for iOS and macOS
Published: September 1, 2025
Security Bulletin ID
SB2025090130
CSH Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper authorization (CVE-ID: CVE-2025-55177)
CWE-ID: CWE-285 - Improper Authorization
CVSSv4: 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
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).
Remediation
Install update from vendor's website.