{"id":"CVE-2025-55177","aliases":["EUVD-2025-26214","GHSA-f7wf-m2qg-r9rx"],"status":"published","title":"Incomplete authorization of linked device synchronization messages in WhatsApp for iOS prior to...","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.","severity":{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N/E:F/RL:O/RC:C","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.13513,"percentile":0.965,"model":"v2026.06.15"},"facts":{"in_kev":true,"known_exploited":true,"public_exploit":true,"fix_available":false},"cwes":["CWE-863"],"published":"2025-08-29T15:50:28Z","modified":"2026-10-18T21:10:00Z","kev":{"date_added":"2025-09-02","due_date":"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.","known_ransomware_use":"Unknown"},"exploitation":[{"source":"euvd","since":"2025-09-02"},{"source":"kev","since":"2025-09-02"}],"exploits":[{"source":"pocgithub","id":"danielw98/zero-click-exploit-analysis","title":"danielw98/zero-click-exploit-analysis","date":"2026-04-24","url":"https://github.com/danielw98/zero-click-exploit-analysis"},{"source":"pocgithub","id":"giannicabrera90-design/iOS-WhatsApp-Zero-Click-Forensic-Scanner","title":"giannicabrera90-design/iOS-WhatsApp-Zero-Click-Forensic-Scanner","date":"2026-11-12","url":"https://github.com/giannicabrera90-design/iOS-WhatsApp-Zero-Click-Forensic-Scanner"}],"products":[{"vendor":"facebook","product":"whatsapp business for ios"},{"vendor":"facebook","product":"whatsapp desktop for mac"},{"vendor":"facebook","product":"whatsapp for ios"},{"vendor":"meta platforms","product":"whatsapp"},{"vendor":"whatsapp","product":"whatsapp"},{"vendor":"whatsapp","product":"whatsapp_business"}],"references":[{"url":"https://www.facebook.com/security/advisories/cve-2025-55177","tags":["x_refsource_CONFIRM","Vendor Advisory"]},{"url":"https://www.whatsapp.com/security/advisories/2025/","tags":["x_refsource_CONFIRM","Vendor Advisory"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-55177","tags":["government-resource","US Government Resource"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-55177"},{"url":"https://www.whatsapp.com/security/advisories/2025"},{"url":"https://github.com/advisories/GHSA-f7wf-m2qg-r9rx"}],"sources":{"cve":[{"id":"CVE-2025-55177","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.","status":"published","published":"2025-08-29T15:50:28.578Z","modified":"2026-10-07T17:57:35.015Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N/E:F/RL:O/RC:C","level":"medium","assessor":"cna"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T14:32:52.839698Z"}],"euvd":[{"id":"EUVD-2025-26214","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.","status":"published","published":"2025-08-29T15:50:28Z","modified":"2026-10-07T17:57:35Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N/E:F/RL:O/RC:C","level":"medium"}],"exploited_since":"2025-09-02","updated_at":"2026-11-02T17:27:34.815018Z"}],"ghsa":[{"id":"GHSA-f7wf-m2qg-r9rx","title":"Incomplete authorization of linked device synchronization messages in WhatsApp for iOS prior to...","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.","status":"published","published":"2025-08-29T18:30:50Z","modified":"2025-10-22T00:33:20Z","cvss":[{"version":"3.1","score":8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T15:04:08.198655Z"}],"kev":[{"id":"CVE-2025-55177","title":"Meta Platforms WhatsApp Incorrect Authorization Vulnerability","description":"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.","cwes":["CWE-863"],"kev":{"date_added":"2025-09-02","due_date":"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.","known_ransomware_use":"Unknown"},"updated_at":"2026-11-02T17:00:15.999436Z"}],"nvd":[{"id":"CVE-2025-55177","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.","status":"published","published":"2025-08-29T16:15:36.723Z","modified":"2026-10-18T21:10:00.12Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T14:11:26.200344Z"}]}}