What is CVE-2018-14055?

CVE-2018-14055 is a medium-severity vulnerability in Znc, classified under Improper Input Validation. CVSS score: 6.5/10. Published 2018-07-15.

How severe is CVE-2018-14055?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Improper input validation in Znc

CVE-2018-14055

ZNC before 1.7.1-rc1 does not properly validate untrusted lines coming from the network, allowing a non-admin user to escalate his privilege and inject rogue values into znc.conf.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2018-07-15 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.015 (72.6th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 73rd percentile — 72.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.015 · newest: 0.015 · change: 0.000

Affected products

Znc
Debian Linux — versions 9.0

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

github.com/znc/znc/commit/a7bfbd93812950b7444841431e8e297e62cb524e (Patch, Third Party Advisory)
github.com/znc/znc/commit/d22fef8620cdd87490754f607e7153979731c69d (Patch, Third Party Advisory)
www.debian.org/security/2018/dsa-4252 (vendor-advisory, Third Party Advisory)
security.gentoo.org/glsa/201807-03 (vendor-advisory, Third Party Advisory)

Frequently asked questions

What is CVE-2018-14055?: CVE-2018-14055 is a medium-severity vulnerability in Znc, classified under Improper Input Validation. CVSS score: 6.5/10. Published 2018-07-15.
How severe is CVE-2018-14055?: Medium severity. CVSS v3 base score is 6.5 out of 10.