What is CVE-2018-17231?

CVE-2018-17231 is a high-severity vulnerability in Telegram Desktop, classified under Reachable Assertion. CVSS score: 7.5/10. Published 2018-09-19.

How severe is CVE-2018-17231?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Telegram Desktop

CVE-2018-17231

Telegram Desktop (aka tdesktop) 1.3.14 might allow attackers to cause a denial of service (assertion failure and application exit) via an "Edit color palette" search that triggers an "index out of range" condition. NOTE: this issue is disputed by multiple third parties because the described attack scenario does not cross a privilege boundary

Published 2018-09-19 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.015 (73.6th percentile), scored 2026-10-03.

Low probability of exploitation in the next 30 days, but still tracked. 74th percentile — 73.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.015 · newest: 0.015 · change: 0.000

Affected products

Telegram Desktop — versions 1.3.14

Weakness classification (CWE)

CWE-617 — Reachable Assertion

References

www.openwall.com/lists/oss-security/2018/09/19/8 (Exploit, Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2018-17231?: CVE-2018-17231 is a high-severity vulnerability in Telegram Desktop, classified under Reachable Assertion. CVSS score: 7.5/10. Published 2018-09-19.
How severe is CVE-2018-17231?: High severity. CVSS v3 base score is 7.5 out of 10.