In CISA KEV5.4 Medium
CVE-2025-55177
Meta Platforms WhatsApp Incorrect Authorization Vulnerability
Meta PlatformsWhatsApp
Status
- Exploited in the wild
- In CISA KEV since 2 Sep 2025
- Vendor fix available
Federal deadlineTue 23 Sep 2025, 23:59 UTC
Passed 396 days ago
CISA KEV · added 2 Sep 2025
Exploit probabilityEPSSchecked 25 Oct
13%probability of exploitation in the next 30 days
Higher than 96% of scored CVEs
SeverityCVSS
5.4Medium
Description NVD
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.
CISA 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.
Coverage 1 article · 1 outlet
- Zero-Click WhatsApp Account Takeover Hits iPhone Users Running iOS 16. No Linked Devices, No WarningSecurity Affairs · first in our coverage · mentions it in passing