CVE-2025-55177
Last modified
CVE-2025-55177 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. 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 has confirmed active exploitation in the wild. EPSS estimates a 4.12% chance of exploitation in the next 30 days.
Description
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Exploitation Status
This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by .
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| >= 2.22.25.2, < 2.25.21.73 | ||
| >= 2.22.25.2, < 2.25.21.78 | ||
| Whatsapp Business | >= 2.22.25.2, < 2.25.21.78 |
References
- https://www.facebook.com/security/advisories/cve-2025-55177Vendor Advisory
- https://www.whatsapp.com/security/advisories/2025/Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-55177US Government Resource
Timeline
- Published
- Last Modified
- Status
- Analyzed
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