Overview
Meta Platforms WhatsApp contains an incorrect authorization vulnerability due to an incomplete authorization of linked device synchronization messages. This vulnerability could allow an unrelated user to trigger processing of content from an arbitrary URL on a target’s device.
https://www.whatsapp.com/security/advisories/2025/ ; https://nvd.nist.gov/vuln/detail/CVE-2025-55177
Key Details
| Property | Value |
|---|---|
| CVE ID | CVE-2025-55177 |
| Vendor / Product | Meta Platforms — WhatsApp |
| NVD Published | 2025-08-29 |
| NVD Last Modified | 2025-10-24 |
| CVSS 3.1 Score | 5.4 |
| CVSS 3.1 Vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N |
| Severity | MEDIUM |
| CWE | CWE-863 |
| CISA KEV Added | 2025-09-02 |
| CISA KEV Deadline | 2025-09-23 |
| Known Ransomware Use | No |
CVSS 3.1 Breakdown
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None
Required Action
CISA BOD 22-01 Deadline: 2025-09-23.
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Timeline
| Date | Event |
|---|---|
| 2025-09-02 | Added to CISA Known Exploited Vulnerabilities catalog |
| 2025-09-23 | CISA BOD 22-01 remediation deadline |
References
| Resource | Type |
|---|---|
| NVD — CVE-2025-55177 | Vulnerability Database |
| CISA KEV Catalog Entry | US Government |