MEDIUM 5.4
KEV
CVE-2025-55177
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.
CVSS v3
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
EPSS
0.7%
percentile 72.7%
CISA Known Exploited Vulnerability
- Added to KEV
- 2025-09-02
- Remediation deadline
- 2025-09-23
- Required action
- Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- Ransomware
- No
Affected tracked apps
Vulnerable CPE configurations
| Vendor | Product | Platform | Versions | CPE 2.3 URI |
|---|---|---|---|---|
|
whatsapp iOS
|
iOS | ≥2.22.25.2 <2.25.21.73 | cpe:2.3:a:whatsapp:whatsapp:*:*:*:*:*:iphone_os:*:* | |
|
whatsapp_business iOS
|
iOS | ≥2.22.25.2 <2.25.21.78 | cpe:2.3:a:whatsapp:whatsapp_business:*:*:*:*:*:iphone_os:*:* |