What is CVE-2019-6527?

CVE-2019-6527 is a critical-severity vulnerability in Ics-Cert Pr100088 Modbus Gateway, classified under Improper Authentication. CVSS score: 9.8/10. Published 2019-02-12.

How severe is CVE-2019-6527?

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

Auth bypass in Ics-Cert Pr100088 Modbus Gateway

CVE-2019-6527

PR100088 Modbus gateway versions prior to Release R02 (or Software Version 1.1.13166) may allow an attacker to be able to change the password for an admin user who is currently or previously logged in, provided the device has not been restarted.

Vulnerability class: Broken Authentication

Published 2019-02-12 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.012 (67.3th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 67th percentile — 67.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000

Affected products

Ics-Cert Pr100088 Modbus Gateway — versions All versions prior to Release R02 (or Software Version 1.1.13166)
Kunbus Pr100088 Modbus Gateway
Kunbus Pr100088 Modbus Gateway Firmware

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

ics-cert.us-cert.gov/advisories/ICSA-19-036-05 (US Government Resource, Third Party Advisory, Mitigation)

Frequently asked questions

What is CVE-2019-6527?: CVE-2019-6527 is a critical-severity vulnerability in Ics-Cert Pr100088 Modbus Gateway, classified under Improper Authentication. CVSS score: 9.8/10. Published 2019-02-12.
How severe is CVE-2019-6527?: Critical severity. CVSS v3 base score is 9.8 out of 10.