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.
| Name | Vendor | Start Version | End Version | 
|---|---|---|---|
| Telegram | Telegram | * | 7.8.1 (excluding) | 
| Telegram | Telegram | * | 7.8.3 (excluding) | 
| Telegram_desktop | Telegram | * | 2.8.8 (excluding) | 
| Telegram-desktop | Ubuntu | bionic | * | 
| Telegram-desktop | Ubuntu | focal | * | 
| Telegram-desktop | Ubuntu | groovy | * | 
| Telegram-desktop | Ubuntu | hirsute | * | 
| Telegram-desktop | Ubuntu | impish | * | 
| Telegram-desktop | Ubuntu | kinetic | * | 
| Telegram-desktop | Ubuntu | trusty | * | 
| Telegram-desktop | Ubuntu | xenial | * |