CVE-2018-7791
A Permissions, Privileges, and Access Control vulnerability exists in Schneider Electric's Modicon M221 product (all references, all versions prior to firmware V1.6.2.0). The vulnerability allows unauthorized users to overwrite the original password with their password. If an attacker exploits this vulnerability and overwrite the password, the attacker can upload the original program from the PLC.
- Score
- CVSS 3.1 9.8 Critical
- Status
- Modified - cybersecurity@se.com
- Published
- 2018-08-29
- Last modified
- 2026-05-29
- Weaknesses
- CWE-284, CWE-287
Affected products
- Modicon M221 Firmware (Schneider-electric)
- All References (Schneider Electric Se)
- All Versions Prior To Firmware V1.6.2.0 (Schneider Electric Se)
- Modicon M221 (Schneider Electric Se)
References
- http://www.securityfocus.com/bid/105182
- https://www.schneider-electric.com/en/download/document/SEVD-2018-235-01/
