CRITICAL

CVE-2018-7809

CVSS v3

9.8

CRITICAL

EPSS Score

2.5 %

exploit probability, as of 2026-10-19

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2018-7809 yet.

Full record on NVD

Description

An Unverified Password Change vulnerability exists in the embedded web servers in all Modicon M340, Premium, Quantum PLCs and BMXNOR0200 which could allow an unauthenticated remote user to access the password delete function of the web server.

Technical details

Published: 2018-11-30

Frequently asked questions

What is CVE-2018-7809?

Is CVE-2018-7809 actively exploited?

Active exploitation of CVE-2018-7809 has not been confirmed. Its EPSS score was 2.5% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2018-7809?

CVE-2018-7809 has a CVSS v3 base score of 9.8 (CRITICAL severity).

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