Vulnerability in Schneider-electric Modicon_m340

CVE-2018-7842

A CWE-290: Authentication Bypass by Spoofing vulnerability exists in all versions of the Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium which could cause an elevation of privilege by conducting a brute force attack on Mod…

EPSS: 0.350 (98.2th percentile) — read the EPSS interpretation.

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.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2018-7842?
CVE-2018-7842 is a critical-severity vulnerability in Schneider-electric Modicon_m340, classified under Authentication Bypass by Spoofing. CVSS score: 9.8/10. Published 2019-05-22.
How severe is CVE-2018-7842?
Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2018-7842 known to be exploited?
2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.