Hard coded accounts exist in Schneider Electric's Modicon Premium, Modicon Quantum, Modicon M340, and BMXNOR0200 controllers in all versions of the communication modules.
https://www.schneider-electric.com/en/download/document/SEVD-2018-081-01/
https://ics-cert.us-cert.gov/advisories/ICSA-18-086-01
http://www.securityfocus.com/bid/103542
Source: Mitre, NVD
Published: 2018-04-18
Updated: 2024-11-21
Base Score: 10
Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C
Severity: Critical
Base Score: 9.8
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H