What is CVE-2017-5196?

CVE-2017-5196 is a high-severity vulnerability in Irssi, classified under Out-of-bounds Read. CVSS score: 7.5/10. Published 2017-03-03.

How severe is CVE-2017-5196?

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

Out-of-bounds Read in Irssi

CVE-2017-5196

Irssi 0.8.18 before 0.8.21 allows remote attackers to cause a denial of service (out-of-bounds read and crash) via vectors involving strings that are not UTF8.

Vulnerability class: Buffer Overflow

Published 2017-03-03 · 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: 0.051 (92.0th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 92nd percentile — 92.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.051 · newest: 0.051 · change: 0.000

Affected products

Irssi

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

References

www.openwall.com/lists/oss-security/2017/01/06/1 (mailing-list, Mailing List, Third Party Advisory)
irssi.org/security/irssi_sa_2017_01.txt (Patch, Vendor Advisory)
www.securityfocus.com/bid/95310 (VDB Entry, Third Party Advisory, vdb-entry)
security.gentoo.org/glsa/201701-45 (vendor-advisory, Third Party Advisory)

Frequently asked questions

What is CVE-2017-5196?: CVE-2017-5196 is a high-severity vulnerability in Irssi, classified under Out-of-bounds Read. CVSS score: 7.5/10. Published 2017-03-03.
How severe is CVE-2017-5196?: High severity. CVSS v3 base score is 7.5 out of 10.