CVE-2021-31320
HIGHTelegram < 7.1.0 - Heap Buffer Overflow in VGradientCache::generateGradientColorTable
Title source: llmDescription
Telegram Android <7.1.0 (2090), Telegram iOS <7.1, and Telegram macOS <7.1 are affected by a Heap Buffer Overflow in the VGradientCache::generateGradientColorTable function of their custom fork of the rlottie library. A remote attacker might be able to overwrite heap memory out-of-bounds on a victim device via a malicious animated sticker.
References (2)
Core 2
Core References
Exploit, Third Party Advisory x_refsource_misc
https://www.shielder.it/blog/2021/02/hunting-for-bugs-in-telegrams-animated-stickers-remote-attack-surface/
Exploit, Third Party Advisory x_refsource_misc
https://www.shielder.it/advisories/telegram-rlottie-vgradientcache-generategradientcolortable-heap-buffer-overflow/
Scores
CVSS v3
7.1
EPSS
0.0122
EPSS Percentile
65.0%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H
Details
CWE
CWE-787
Status
published
Products (1)
telegram/telegram
< 7.1.0 (3 CPE variants)
Published
May 18, 2021
Tracked Since
Feb 18, 2026