Auth bypass in Schneider-Electric Atv Imc Drive Controller

CVE-2019-6820

A CWE-306: Missing Authentication for Critical Function vulnerability exists which could cause a modification of device IP configuration (IP address, network mask and gateway IP address) when a specific Ethernet frame is received in all versions of: Modicon M100, Modicon M200, Modicon M221, ATV IMC drive controller, Modicon M241, Modicon M251, Modicon M258, Modicon LMC058, Modicon LMC078, PacDrive Eco ,PacDrive Pro, PacDrive Pro2

Vulnerability class: Broken Authentication

EPSS: 0.013 (67.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2019-6820?
CVE-2019-6820 is a high-severity vulnerability in Schneider-Electric Atv Imc Drive Controller, classified under Missing Authentication for Critical Function. CVSS score: 8.2/10. Published 2019-05-22.
How severe is CVE-2019-6820?
High severity. CVSS v3 base score is 8.2 out of 10.
Is CVE-2019-6820 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.