What is CVE-2020-12474?

CVE-2020-12474 is a medium-severity vulnerability in Telegram. CVSS score: 6.5/10. Published 2020-05-01.

How severe is CVE-2020-12474?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Telegram

CVE-2020-12474

Telegram Desktop through 2.0.1, Telegram through 6.0.1 for Android, and Telegram through 6.0.1 for iOS allow an IDN Homograph attack via Punycode in a public URL or a group chat invitation URL.

Published 2020-05-01 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.026 (84.7th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 85th percentile — 84.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.025 · newest: 0.026 · change: +0.001

Affected products

References

github.com/VijayT007/Vulnerability-Database/blob/master/Telegram:CVE-2020-12474 (Third Party Advisory)

Frequently asked questions

What is CVE-2020-12474?: CVE-2020-12474 is a medium-severity vulnerability in Telegram. CVSS score: 6.5/10. Published 2020-05-01.
How severe is CVE-2020-12474?: Medium severity. CVSS v3 base score is 6.5 out of 10.