CVE-2021-36769

Name of the Vulnerable Software and Affected Versions Telegram versions prior to 7.8.1 for Android Telegram versions prior to 7.8.3 for iOS Telegram Desktop versions prior to 2.8.8

Description A reordering issue exists in Telegram, allowing an attacker to cause the server to receive messages in a different order than they were sent to the client. This issue can be exploited by an attacker, potentially leading to unintended consequences.

Recommendations For Telegram versions prior to 7.8.1 for Android, update to version 7.8.1 or later. For Telegram versions prior to 7.8.3 for iOS, update to version 7.8.3 or later. For Telegram Desktop versions prior to 2.8.8, update to version 2.8.8 or later.