CVE-2025-55177Meta Platforms WhatsApp Incorrect Authorization Vulnerability
Incomplete authorization of linked device synchronization messages in WhatsApp for iOS prior to v2.25.21.73, WhatsApp Business for iOS v2.25.21.78, and WhatsApp for Mac v2.25.21.78 could have allowed an unrelated user to trigger processing of content from an arbitrary URL on a target’s device. We assess that this vulnerability, in combination with an OS-level vulnerability on Apple platforms (CVE-2025-43300), may have been exploited in a sophisticated attack against specific targeted users.
Overview
Severity
| Score | Severity | Version | Vector String |
|---|---|---|---|
| 5.4 | MEDIUM | 3.1facebook (CNA) | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N |
| 5.4 | MEDIUM | 3.1facebook (CNA) | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N/E:F/RL:O/RC:C |
CISA required action
⚡ Known exploited · remediation due Sep 23, 2025
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Details
- CVE ID
- CVE-2025-55177
- Status
- Analyzed
- Assigner (CNA)
- Published
- Aug 29, 2025
- Last modified
- 2026-10-18 21:10 UTC
- Weaknesses
Affected Products
As published by the CNA in the CVE record.
FacebookWhatsApp Desktop for Mac1 version range
- 2.22.25.2 before 2.25.21.78
FacebookWhatsApp Business for iOS1 version range
- 2.22.25.2 before 2.25.21.78
FacebookWhatsApp for iOS1 version range
- 2.22.25.2 before 2.25.21.73