{"id":"CVE-2021-30496","aliases":["EUVD-2021-17417","GHSA-25r9-gpg2-xcwf"],"status":"disputed","title":"The Telegram app 7.6.2 for iOS allows remote authenticated users to cause a denial of service ...","description":"The Telegram app 7.6.2 for iOS allows remote authenticated users to cause a denial of service (application crash) if the victim pastes an attacker-supplied message (e.g., in the Persian language) into a channel or group. The crash occurs in MtProtoKitFramework. NOTE: the vendor's perspective is that \"this behavior can't be considered a vulnerability.\"","severity":{"version":"3.1","score":5.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.01177,"percentile":0.68043,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-121"],"published":"2021-04-20T00:00:00Z","modified":"2026-06-17T03:50:20Z","products":[{"vendor":"telegram","product":"telegram"}],"references":[{"url":"https://gist.github.com/raminfp/bf64c2974ee6949787329749148a4b31","tags":["x_transferred","Exploit","Third Party Advisory"]},{"url":"https://t.me/joinchat/bJ9cnUosVh03ZTI0","tags":["x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-30496"},{"url":"https://github.com/advisories/GHSA-25r9-gpg2-xcwf"}],"sources":{"cve":[{"id":"CVE-2021-30496","description":"The Telegram app 7.6.2 for iOS allows remote authenticated users to cause a denial of service (application crash) if the victim pastes an attacker-supplied message (e.g., in the Persian language) into a channel or group. The crash occurs in MtProtoKitFramework. NOTE: the vendor's perspective is that \"this behavior can't be considered a vulnerability.\"","status":"disputed","published":"2021-04-20T00:00:00Z","modified":"2024-08-03T22:32:41.088Z","cvss":[{"version":"3.1","score":5.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"adp"}],"cwes":["CWE-121"],"updated_at":"2026-11-02T14:33:02.20241Z"}],"euvd":[{"id":"EUVD-2021-17417","description":"The Telegram app 7.6.2 for iOS allows remote authenticated users to cause a denial of service (application crash) if the victim pastes an attacker-supplied message (e.g., in the Persian language) into a channel or group. The crash occurs in MtProtoKitFramework. NOTE: the vendor's perspective is that \"this behavior can't be considered a vulnerability.\"","status":"published","published":"2021-04-20T00:00:00Z","modified":"2024-08-03T22:32:41Z","cvss":[{"version":"3.1","score":5.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-03T03:24:41.906207Z"}],"ghsa":[{"id":"GHSA-25r9-gpg2-xcwf","title":"The Telegram app 7.6.2 for iOS allows remote authenticated users to cause a denial of service ...","description":"The Telegram app 7.6.2 for iOS allows remote authenticated users to cause a denial of service (application crash) if the victim pastes an attacker-supplied message (e.g., in the Persian language) into a channel or group. The crash occurs in MtProtoKitFramework.","status":"published","published":"2022-05-24T17:47:59Z","modified":"2024-07-03T18:32:27Z","cvss":[{"version":"3.1","score":5.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-121"],"updated_at":"2026-11-02T14:57:33.266743Z"}],"nvd":[{"id":"CVE-2021-30496","description":"The Telegram app 7.6.2 for iOS allows remote authenticated users to cause a denial of service (application crash) if the victim pastes an attacker-supplied message (e.g., in the Persian language) into a channel or group. The crash occurs in MtProtoKitFramework. NOTE: the vendor's perspective is that \"this behavior can't be considered a vulnerability.\"","status":"disputed","published":"2021-04-20T16:15:10.59Z","modified":"2026-06-17T03:50:20.403Z","cvss":[{"version":"3.1","score":5.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary"},{"version":"3.1","score":5.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"},{"version":"2.0","score":3.5,"vector":"AV:N/AC:M/Au:S/C:N/I:N/A:P","level":"low","assessor":"primary"}],"cwes":["CWE-121"],"updated_at":"2026-11-02T14:06:52.03307Z"}]}}