01 Record

CVE-2021-31319

Telegram Android <7.1.0 (2090), Telegram iOS <7.1, and Telegram macOS <7.1 are affected by an Integer Overflow in the LOTGradient::populate function of their custom fork of the rlottie library. A

UnratedPUBLISHEDCNA: mitre

CNA base scoreUnratedNo CNA CVSS vector

View raw JSON

02 Description

Telegram Android <7.1.0 (2090), Telegram iOS <7.1, and Telegram macOS <7.1 are affected by an Integer Overflow in the LOTGradient::populate function of their custom fork of the rlottie library. A

03 Exploitation and scoring

Exploitation: Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision: Not assessed by CISA
EPSS probability: 1.28% probability of exploitation activity in the next 30 days.
EPSS percentile: Equal to or higher than the score of 69.7% of scored records. A rank, not a probability.
NVD base score: 5.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
NVD analysis status: Modified. NVD last modified this record on 2026-06-17.
Red Hat severity: No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2021-05-18 19:44Z5 YR AGO

Last updated

2024-08-03 22:55Z2 YR AGO

Reserved

2021-04-15

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

CWE-190Integer Overflow or WraparoundBase

Data version

5.1

Document digest

ac1742859639723a56eb0a4a2f57fad19053ffa25d5c0d43116d80b647d6b8f8

05 Affected products

VendorProductVersionsPlatforms

telegramtelegramNot specified—

06 References

www.shielder.ithttps://www.shielder.it/blog/2021/02/hunting-for-bugs-in-telegrams-animated-stickers-remote-attack-surface/x_refsource_MISC
www.shielder.ithttps://www.shielder.it/advisories/telegram-rlottie-lotgradient-populate-integer-overflow/x_refsource_MISC

07 Fixed in

Ubuntu Pro 20.04 LTS

rlottie
Fixed in 0~git20200305.a717479+dfsg-1ubuntu0.1~esm1
Available with Ubuntu Pro: https://ubuntu.com/pro

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.