9.8crit
CVE-2018-7790
An Information Management Error vulnerability exists in Schneider Electric's Modicon M221 product (all references, all versions prior to fi…
Published 8 y ago · modified 4 mo ago · JSON
CVSS
9.8
v3.1 · CNA
CISA KEV
No
not known exploited
EPSS
2.4%
percentile 84%
Public exploits
0
none known
Summary
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.
CISA SSVC assessment
- Exploitation
- none
- Automatable
- yes
- Technical impact
- total
- Assessed
- 5 mo ago
Exploit prediction (EPSS)
2.38% probability of exploitation in the next 30 days, higher than 84% of all scored CVEs.
CVSS scores
| Assigned by | Version | Score | Vector |
|---|---|---|---|
| CISA ADP | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| CNA | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
Affected products
- Schneider Electric SE Modicon M221, all references, all versions prior to firmware V1.6.2.0
Classification
- Weakness
- CWE-294 Authentication Bypass by Capture-replay
References
- securityfocus.com /bid/105182 · vdb-entry, x_refsource_BID, x_transferred
- schneider-electric.com /en/download/document/SEVD-2018-235-01/ · x_refsource_CONFIRM, x_transferred
Sources
- CVE List: CVE-2018-7790
- NVD: CVE-2018-7790
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