Vulnerability Details 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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.218
EPSS Ranking 95.5%
CVSS Severity
CVSS v3 Score 5.4
Proposed Action
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.
Ransomware Campaign
Unknown
References
Products affected by CVE-2025-55177
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cpe:2.3:a:whatsapp:whatsapp:*
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cpe:2.3:a:whatsapp:whatsapp_business:2.22.25.2