{"id":"CVE-2021-24026","aliases":["EUVD-2021-10946","GHSA-36r2-rr2j-2cvx"],"status":"published","title":"A missing bounds check within the audio decoding pipeline for WhatsApp calls in WhatsApp for...","description":"A missing bounds check within the audio decoding pipeline for WhatsApp calls in WhatsApp for Android prior to v2.21.3, WhatsApp Business for Android prior to v2.21.3, WhatsApp for iOS prior to v2.21.32, and WhatsApp Business for iOS prior to v2.21.32 could have allowed an out-of-bounds write.","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":"2026-11-11","score":0.01403,"percentile":0.72897,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-787"],"published":"2021-04-06T16:45:15Z","modified":"2026-06-17T03:39:11Z","products":[{"vendor":"facebook","product":"whatsapp business for android"},{"vendor":"facebook","product":"whatsapp business for ios"},{"vendor":"facebook","product":"whatsapp for android"},{"vendor":"facebook","product":"whatsapp for ios"},{"vendor":"whatsapp","product":"whatsapp"},{"vendor":"whatsapp","product":"whatsapp_business"}],"references":[{"url":"https://www.whatsapp.com/security/advisories/2021/","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-24026"},{"url":"https://github.com/advisories/GHSA-36r2-rr2j-2cvx"}],"sources":{"cve":[{"id":"CVE-2021-24026","description":"A missing bounds check within the audio decoding pipeline for WhatsApp calls in WhatsApp for Android prior to v2.21.3, WhatsApp Business for Android prior to v2.21.3, WhatsApp for iOS prior to v2.21.32, and WhatsApp Business for iOS prior to v2.21.32 could have allowed an out-of-bounds write.","status":"published","published":"2021-04-06T16:45:15Z","modified":"2024-08-03T19:21:17.055Z","cwes":["CWE-787"],"updated_at":"2026-11-02T14:33:04.679189Z"}],"euvd":[{"id":"EUVD-2021-10946","description":"A missing bounds check within the audio decoding pipeline for WhatsApp calls in WhatsApp for Android prior to v2.21.3, WhatsApp Business for Android prior to v2.21.3, WhatsApp for iOS prior to v2.21.32, and WhatsApp Business for iOS prior to v2.21.32 could have allowed an out-of-bounds write.","status":"published","published":"2021-04-06T16:45:15Z","modified":"2024-08-03T19:21:17Z","updated_at":"2026-11-03T03:24:59.661237Z"}],"ghsa":[{"id":"GHSA-36r2-rr2j-2cvx","title":"A missing bounds check within the audio decoding pipeline for WhatsApp calls in WhatsApp for...","description":"A missing bounds check within the audio decoding pipeline for WhatsApp calls in WhatsApp for Android prior to v2.21.3, WhatsApp Business for Android prior to v2.21.3, WhatsApp for iOS prior to v2.21.32, and WhatsApp Business for iOS prior to v2.21.32 could have allowed an out-of-bounds write.","status":"published","published":"2022-05-24T17:46:36Z","modified":"2023-01-29T05:05:52Z","cwes":["CWE-787"],"updated_at":"2026-11-02T14:45:53.730969Z"}],"nvd":[{"id":"CVE-2021-24026","description":"A missing bounds check within the audio decoding pipeline for WhatsApp calls in WhatsApp for Android prior to v2.21.3, WhatsApp Business for Android prior to v2.21.3, WhatsApp for iOS prior to v2.21.32, and WhatsApp Business for iOS prior to v2.21.32 could have allowed an out-of-bounds write.","status":"published","published":"2021-04-06T17:15:12.87Z","modified":"2026-06-17T03:39:11.007Z","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":10,"vector":"AV:N/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:06:51.610648Z"}]}}