What’s Vulnerable › Vulnerabilities
CVE-2021-36769
- Severity: medium (CVSS 5.3 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 1.4% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2021-07-17 · updated 2026-06-17
Description
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.
Affected products
- Telegram: before 7.8.1; before 7.8.3 — fixed in 7.8.1, 7.8.3
- Telegram Desktop: before 2.8.8 — fixed in 2.8.8
How to fix
Upgrade to a fixed version: Telegram 7.8.1, 7.8.3; Telegram Desktop 2.8.8. Check the vendor advisory for mitigations.
References
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