{"id":"CVE-2021-36769","details":"A reordering issue exists in Telegram before 7.8.1 for Android, Telegram before 7.8.3 for iOS, and Telegram Desktop before 2.8.8. An attacker can cause the server to receive messages in a different order than they were sent a client.","modified":"2026-05-18T21:47:12.621417Z","published":"2021-07-17T00:15:07.847Z","database_specific":{"unresolved_ranges":[{"vendor_product":"telegram:telegram","cpes":["cpe:2.3:a:telegram:telegram:*:*:*:*:*:iphone_os:*:*"],"extracted_events":[{"fixed":"7.8.3"}],"source":"CPE_FIELD"}]},"references":[{"type":"ADVISORY","url":"https://mtpsym.github.io"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/drklo/telegram","events":[{"introduced":"0"},{"fixed":"3ac3c37dd24e82779f7e20f31eb3df8f0bf46081"}],"database_specific":{"cpe":"cpe:2.3:a:telegram:telegram:*:*:*:*:*:android:*:*","extracted_events":[{"introduced":"0"},{"fixed":"7.8.1"}],"source":"CPE_FIELD"}}],"versions":["release-7.8.0_2360","release-7.7.2_2293","release-7.7.1_2291","release-7.7.0_2284","release-7.6.1_2274","release-7.6.0_2264","release-7.5.0_2246","release-7.5.0_2245","release-7.5.0_2244","release-7.5.0_2243","release-7.4.2_2227","release-7.4.1_2225","release-7.4.0_2223","release-7.4.0_2221","release-7.3.0_2206","release-7.3.0_2197","release-7.3.0_2196","release-7.3.0_2195","release-7.2.1_2139","release-7.2.1_2137","release-7.2.1_2136","release-7.2.1_2135","release-7.2.0_2134","release-7.2.0_2128","release-7.1.3_2103","release-7.1.3_2100","release-7.1.2_2098","release-7.1.1_2096","release-7.1.1_2094","release-7.1.0_2092","release-7.1.0_2090","release-7.0.1_2065","release-7.0.0_2064","release-7.0.0_2061","release-7.0.0_2060","release-6.3.0_2042","release-6.3.0_2040","release-6.2.0_1988","release-6.2.0_1986","release-6.2.0_1985","release-6.2.0_1984","release-6.1.1_1946","release-6.1.1_1945","release-6.1.0_1941","release-6.1.0_1940","release-6.1.0_1938","release-6.0.1_1911","release-6.0.1_1910","release-6.0.0_1908","release-5.15.0_1869","release-5.15.0_1868","release-5.15.0_1867","release-5.15.0_1866","release-5.15.0_1864","release-5.14.0_1851","release-5.14.0_1849","release-5.14.0_1846","release-5.13.1_1829","release-5.13.1_1826","release-5.13.0_1823","release-5.13.0_1821","release-5.13.0_1820","release-5.13.0_1819","release-5.13.0_1818"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-36769.json"}},{"ranges":[{"type":"GIT","repo":"https://github.com/telegramdesktop/tdesktop","events":[{"introduced":"0"},{"fixed":"b69cac3ed6d224146b60d1586e0e1fa40aafc3cf"}],"database_specific":{"cpe":"cpe:2.3:a:telegram:telegram_desktop:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"fixed":"2.8.8"}],"source":"CPE_FIELD"}}],"versions":["v2.8.6","v2.8.5","v2.8.4","v2.8.3","v2.8.2","v2.8.1","v2.8.0","v2.7.10","v2.7.9","v2.7.8","v2.7.7","v2.7.5","v2.7.4","v2.7.3","v2.7.2","v2.7.1","v2.7.0","v2.6.8","v2.6.7","v2.6.6","v2.6.5","v2.6.4","v2.6.3","v2.6.2","v2.6.1","v2.6.0","v2.5.9","v2.5.8","v2.5.7","v2.5.6","v2.5.5","v2.5.4","v2.5.3","v2.5.2","v2.5.1","v2.5.0","v2.4.15","v2.4.14","v2.4.13","v2.4.12","v2.4.11","v2.4.10","v2.4.9","v2.4.8","v2.4.7","v2.4.6","v2.4.5","v2.4.4","v2.4.3","v2.4.2","v2.4.1","v2.4.0","v2.3.2","v2.3.1","v2.3.0","v2.2.0","v2.1.22","v2.1.21","v2.1.20","v2.1.19","v2.1.18","v2.1.17","v2.1.16","v2.1.15","v2.1.14","v2.1.13","v2.1.12","v2.1.11","v2.1.10","v2.1.9","v2.1.8","v2.1.7","v2.1.6","v2.1.5","v2.1.4","v2.1.3","v2.1.2","v2.1.1","v2.1.0","v2.0.1","v2.0.0","v1.9.22","v1.9.21","v1.9.20","v1.9.19","v1.9.18","v1.9.17","v1.9.16","v1.9.15","v1.9.14","v1.9.13","v1.9.12","v1.9.11","v1.9.10","v1.9.9","v1.9.8","v1.9.7","v1.9.6","v1.9.5","v1.9.4","v1.9.3","v1.9.2","v1.9.1","v1.9.0","v1.8.15","v1.8.14","v1.8.13","v1.8.12","v1.8.11","v1.8.10","v1.8.9","v1.8.8","v1.8.7","v1.8.5","v1.8.4","v1.8.3","v1.8.2","v1.8.1","v1.8.0","v1.7.15","v1.7.14","v1.7.13","v1.7.12","v1.7.11","v1.7.10","v1.7.9","v1.7.8","v1.7.7","v1.7.6","v1.7.5","v1.7.4","v1.7.3","v1.7.2","v1.7.1","v1.7.0","v1.6.7","v1.6.6","v1.6.5","v1.6.4","v1.6.3","v1.6.2","v1.6.1","v1.6.0","v1.5.18","v1.5.17","v1.5.16","v1.5.15","v1.5.13","v1.5.12","v1.5.11","v1.5.10","v1.5.9","v1.5.8","v1.5.7","v1.5.6","v1.5.5","v1.5.4","v1.5.3","v1.5.2","v1.5.1","v1.5.0","v1.4.8","v1.4.7","v1.4.6","v1.4.5","v1.4.4","v1.4.3","v1.4.2","v1.4.1","v1.4.0","v1.3.17","v1.3.16","v1.3.15","v1.3.14","v1.3.13","v1.3.12","v1.3.11","v1.3.10","v1.3.9","v1.3.8","v1.3.7","v1.3.6","v1.3.5","v1.3.4","v1.3.3","v1.3.2","v1.3.1","v1.3.0","v1.2.25","v1.2.24","v1.2.23","v1.2.22","v1.2.21","v1.2.20","v1.2.19","v1.2.18","v1.2.17","v1.2.16","v1.2.15","v1.2.14","v1.2.13","v1.2.12","v1.2.11","v1.2.10","v1.2.9","v1.2.8","v1.2.7","v1.2.6","v1.2.5","v1.2.4","v1.2.3","v1.2.2","v1.2.1","v1.2.0","v1.1.29","v1.1.28","v1.1.27","v1.1.26","v1.1.25","v1.1.24","v1.1.23","v1.1.22","v1.1.21","v1.1.20","v1.1.19","v1.1.18","v1.1.17","v1.1.16","v1.1.15","v1.1.14","v1.1.13","v1.1.12","v1.1.11","v1.1.10","v1.1.9","v1.1.8","v1.1.7","v1.1.6","v1.1.5","v1.1.4","v1.1.3","v1.1.2","v1.1.1","v1.1.0","v1.0.38","v1.0.37","v1.0.36","v1.0.35","v1.0.34","v1.0.33","v1.0.32","v1.0.31","v1.0.30","v1.0.29","v1.0.27","v1.0.28","v1.0.26","v1.0.25","v1.0.24","v1.0.23","v1.0.22","v1.0.21","v1.0.20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