Actively exploited in the wild
Meta Platforms WhatsApp Incorrect Authorization Vulnerability
Meta Platforms - WhatsApp · Listed in the CISA KEV since 2025-09-02. This indicates confirmed attacks in production environments.
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.
CVE-2025-55177
MediumCVSS 5.4KEVSummary
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. This vulnerability, combined with an OS-level vulnerability on Apple platforms (CVE-2025-43300), may have been exploited in a sophisticated attack against specific targeted users.
Risk Assessment
The risk includes potential remote triggering of malicious content processing on the target's device, which could lead to privacy breach or further compromise.
Recommendation
Update WhatsApp to the latest versions and monitor security advisories from WhatsApp and Apple.
Other vulnerabilities in WhatsApp
Original NVD description (English source)
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.