What is CVE-2018-16286?

CVE-2018-16286 is a critical-severity vulnerability in LG Supersign Cms, classified under Improper Authentication. CVSS score: 9.8/10. Published 2018-09-14.

How severe is CVE-2018-16286?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Auth bypass in LG Supersign Cms

CVE-2018-16286

LG SuperSign CMS allows authentication bypass because the CAPTCHA requirement is skipped if a captcha:pass cookie is sent, and because the PIN is limited to four digits.

Vulnerability class: Broken Authentication

Published 2018-09-14 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.215 (97.5th percentile), scored 2026-09-30.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 97.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.215 · newest: 0.215 · change: 0.000

Affected products

LG Supersign Cms

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

mamaquieroserpentester.blogspot.com/2018/09/multiple-vulnerabilities-in-lg.html (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2018-16286?: CVE-2018-16286 is a critical-severity vulnerability in LG Supersign Cms, classified under Improper Authentication. CVSS score: 9.8/10. Published 2018-09-14.
How severe is CVE-2018-16286?: Critical severity. CVSS v3 base score is 9.8 out of 10.