Auth bypass in Schneider-electric Modicon_m340

CVE-2018-7847

A CWE-284: Improper Access Control vulnerability exists in all versions of the Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium which could cause denial of service or potential code execution by overwriting configuration se…

Vulnerability class: Broken Authentication

EPSS: 0.038 (88.7th 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)

References

Frequently asked questions

What is CVE-2018-7847?
CVE-2018-7847 is a critical-severity vulnerability in Schneider-electric Modicon_m340, classified under Improper Authentication. CVSS score: 9.8/10. Published 2019-05-22.
How severe is CVE-2018-7847?
Critical severity. CVSS v3 base score is 9.8 out of 10.