KEV · Actively exploited
CVE-2025-55177
MEDIUM 5.4
KEV
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.
Attack vector : Network
No user interaction
Show raw CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
EPSS
4.21%
above median
percentile 90.0%
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
- Unknown (not documented by CISA)
Tracked apps referencing this CVE
For each app: the affected range, the fixing version, and where the tracked app stands today.
Vulnerable CPE configurations (2)
| 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:*:* |