CVE-2018-7790
- State
- Published
- Severity
- 9.8 Critical
- Published
- Aug 29, 2018
- Updated
- May 29, 2026
- Reserved
- Mar 8, 2018
Description
An Information Management Error 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 replay authentication sequences. If an attacker exploits this vulnerability and connects to a Modicon M221, the attacker can upload the original program from the PLC.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 9.8 Critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | CISA-ADP |
Weaknesses
- CWE-294 Authentication Bypass by Capture-replay
Affected Products
| Product | Versions |
|---|---|
Modicon M221, all references, all versions prior to firmware V1.6.2.0Schneider Electric SE |
|
References
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