What is CVE-2017-9468?

CVE-2017-9468 is a high-severity vulnerability in Irssi, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2017-06-07.

How severe is CVE-2017-9468?

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

NULL pointer dereference in Irssi

CVE-2017-9468

In Irssi before 1.0.3, when receiving a DCC message without source nick/host, it attempts to dereference a NULL pointer. Thus, remote IRC servers can cause a crash.

Published 2017-06-07 · 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: 0.032 (87.8th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 88th percentile — 87.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.032 · newest: 0.032 · change: 0.000

Affected products

Irssi
Debian Linux — versions 8.0, 9.0

Weakness classification (CWE)

CWE-476 — NULL Pointer Dereference

References

www.debian.org/security/2017/dsa-3885 (vendor-advisory, Third Party Advisory)
openwall.com/lists/oss-security/2017/06/06/4 (Patch, Mailing List, Third Party Advisory)
irssi.org/security/irssi_sa_2017_06.txt (Patch, Vendor Advisory)
www.securityfocus.com/bid/99015 (VDB Entry, Third Party Advisory, vdb-entry)
www.securitytracker.com/id/1038621 (VDB Entry, Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2017-9468?: CVE-2017-9468 is a high-severity vulnerability in Irssi, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2017-06-07.
How severe is CVE-2017-9468?: High severity. CVSS v3 base score is 7.5 out of 10.