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Fencer Vulns
high 7.5

CVE-2016-7045 json

The format_send_to_gui function in the format parsing code in Irssi before 0.8.20 allows remote attackers to cause a denial of service (hea…

published 2016-09-27 10 y ago modified 2026-06-17 4 mo ago also EUVD-2016-7927

cvss
7.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
4.7%
EPSS 4.7% chance of exploitation in 30 days, percentile 91%
public exploits
0
none known

Summary

The format_send_to_gui function in the format parsing code in Irssi before 0.8.20 allows remote attackers to cause a denial of service (heap corruption and crash) via vectors involving the length of a string.

Patch / fix

  • irssi Debian 14, Debian 13, Debian 12 0.8.20-1

debian advisories DEBIAN-CVE-2016-7045

  • irssi Ubuntu 16.04 LTS 0.8.19-1ubuntu1.2

ubuntu advisories UBUNTU-CVE-2016-7045

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • irssi Package Hub 12 0.8.20-9.1

suse advisories SUSE-SU-2016:2524-1

  • irssi openSUSE Tumbleweed 0.8.20-3.1
  • irssi Package Hub 12 0.8.20-9.1

opensuse advisories openSUSE-SU-2024:10455-1openSUSE-SU-2016:2524-1

  • irssi Alpine 3.3, Alpine 3.2 0.8.20-r0

alpine advisories ALPINE-CVE-2016-7045

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • irssi Arch Linux 0.8.20-1

arch linux advisories AVG-27

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2016-7045 updated cvss 4.3

irssi: String length not validated in format_send_to_gui() causing crash

  • Red Hat Enterprise Linux 6 irssi Red Hat Enterprise Linux 7 irssi
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

4.71% chance of exploitation in the next 30 days, higher than 91% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • irssi.org https://irssi.org/security/irssi_sa_2016.txt referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 7.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.