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Vulnerability record · CVE-2018-5208 · published 6 January 2018

CVE-2018-5208: Irssi memory buffer overflow vulnerability

Irssi · Irssi

In Irssi before 1.0.6, a calculation error in the completion code could cause a heap buffer overflow when completing certain strings.

9.8 CVSS 3.0 Critical EPSS 2.4% · top 16.8% CWE-119 · Memory buffer overflow
9.8CVSS 3.0 base score, v2 7.5
2.4%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

In Irssi before 1.0.6, a calculation error in the completion code could cause a heap buffer overflow when completing certain strings.

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://irssi.org/security/irssi_sa_2018_01.txt PatchVendor Advisory
https://www.debian.org/security/2018/dsa-4162 Third Party Advisory
https://irssi.org/security/irssi_sa_2018_01.txt PatchVendor Advisory
https://www.debian.org/security/2018/dsa-4162 Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2018-5208), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.