How severe is CVE-2018-17231?

CVE-2018-17231 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2018-17231 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (71st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-17231?

CVE-2018-17231 affects Telegram Telegram Desktop. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-17231?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2018-17231 published?

CVE-2018-17231 was published on 2018-09-19 and last updated on 2026-06-17.

CVE-2018-17231

CVE-2018-17231 is a high-severity vulnerability in Telegram Telegram Desktop with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-617.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 2% (71st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-617
Affected product: Telegram Telegram Desktop
Published: 2018-09-19
Last modified: 2026-06-17

Description

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

Frequently asked questions

What is 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
How severe is CVE-2018-17231?: CVE-2018-17231 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2018-17231 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (71st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-17231?: CVE-2018-17231 affects Telegram Telegram Desktop. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-17231?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2018-17231 published?: CVE-2018-17231 was published on 2018-09-19 and last updated on 2026-06-17.

References

https://www.openwall.com/lists/oss-security/2018/09/19/8

Affected products (1)

cpe:2.3:a:telegram:telegram_desktop:1.3.14:*:*:*:*:*:*:*

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