{"id":"CVE-2018-20655","aliases":["EUVD-2018-13206","GHSA-99ph-jqg7-g9v9"],"status":"published","title":"When receiving calls using WhatsApp for iOS, a missing size check when parsing a sender-provided...","description":"When receiving calls using WhatsApp for iOS, a missing size check when parsing a sender-provided packet allowed for a stack-based overflow. This issue affects WhatsApp for iOS prior to v2.18.90.24 and WhatsApp Business for iOS prior to v2.18.90.24.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.02196,"percentile":0.82602,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-121","CWE-787"],"published":"2019-06-14T17:02:57Z","modified":"2026-06-17T01:53:16Z","products":[{"vendor":"facebook","product":"whatsapp business for ios"},{"vendor":"facebook","product":"whatsapp for ios"},{"vendor":"whatsapp","product":"whatsapp"},{"vendor":"whatsapp","product":"whatsapp_business"}],"references":[{"url":"https://www.facebook.com/security/advisories/cve-2018-20655/","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"http://www.securityfocus.com/bid/108805","tags":["vdb-entry","x_refsource_BID","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-20655"},{"url":"https://www.facebook.com/security/advisories/cve-2018-20655"},{"url":"https://github.com/advisories/GHSA-99ph-jqg7-g9v9"}],"sources":{"cve":[{"id":"CVE-2018-20655","description":"When receiving calls using WhatsApp for iOS, a missing size check when parsing a sender-provided packet allowed for a stack-based overflow. This issue affects WhatsApp for iOS prior to v2.18.90.24 and WhatsApp Business for iOS prior to v2.18.90.24.","status":"published","published":"2019-06-14T17:02:57Z","modified":"2024-08-05T12:05:17.701Z","cwes":["CWE-121"],"updated_at":"2026-11-02T14:34:59.872731Z"}],"euvd":[{"id":"EUVD-2018-13206","description":"When receiving calls using WhatsApp for iOS, a missing size check when parsing a sender-provided packet allowed for a stack-based overflow. This issue affects WhatsApp for iOS prior to v2.18.90.24 and WhatsApp Business for iOS prior to v2.18.90.24.","status":"published","published":"2019-06-14T17:02:57Z","modified":"2024-08-05T12:05:17Z","updated_at":"2026-11-03T02:39:30.323824Z"}],"ghsa":[{"id":"GHSA-99ph-jqg7-g9v9","title":"When receiving calls using WhatsApp for iOS, a missing size check when parsing a sender-provided...","description":"When receiving calls using WhatsApp for iOS, a missing size check when parsing a sender-provided packet allowed for a stack-based overflow. This issue affects WhatsApp for iOS prior to v2.18.90.24 and WhatsApp Business for iOS prior to v2.18.90.24.","status":"published","published":"2022-05-24T16:48:03Z","modified":"2024-04-04T00:57:59Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-121","CWE-787"],"updated_at":"2026-11-02T14:55:53.858593Z"}],"nvd":[{"id":"CVE-2018-20655","description":"When receiving calls using WhatsApp for iOS, a missing size check when parsing a sender-provided packet allowed for a stack-based overflow. This issue affects WhatsApp for iOS prior to v2.18.90.24 and WhatsApp Business for iOS prior to v2.18.90.24.","status":"published","published":"2019-06-14T17:29:01.05Z","modified":"2026-06-17T01:53:16.4Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-121","CWE-787"],"updated_at":"2026-11-02T14:04:57.307075Z"}]}}