An Insufficiently Protected Credentials issue was discovered in Schneider Electric Modicon PLCs Modicon M241, all firmware versions, and Modicon M251, all firmware versions
Published Jun 30, 2017
9.8
CRITICALCVSS 3.1
EPSS 2.25%
Description
An Insufficiently Protected Credentials issue was discovered in Schneider Electric Modicon PLCs Modicon M241, all firmware versions, and Modicon M251, all firmware versions. Log-in credentials are sent over the network with Base64 encoding leaving them susceptible to sniffing. Sniffed credentials could then be used to log into the web application.
Affected products
- Vendor n/a Product Schneider Electric Modicon PLCs Defaultn/a
- Version Schneider Electric Modicon PLCsStatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| n/a | Schneider Electric Modicon PLCs | n/a |
|
Configuration 1
- ≤ 4.0.3.20
Running on/with
- n/a
Configuration 2
- ≤ 4.0.3.20
Running on/with
- n/a
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:P/I:N/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.25% (0.02250) | 82.28th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.25% (0.02250) | 80.56th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.21% (0.00207) | 59.08th | v3 (v2023.03.01) |
| Jun 14, 2024 | 0.21% (0.00207) | 58.84th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.21% (0.00207) | 56.83th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00885) | 27.89th | v2 (v2022.01.01) |
| Oct 11, 2021 | 0.66% (0.00663) | 47.84th | v1 |
| Oct 10, 2021 | 2.91% (0.02909) | 80.81th | v5 (v2026.06.15) |
| Aug 20, 2021 | 2.91% (0.02909) | 0.00th | v1 |
| Apr 14, 2021 | 0.66% (0.00663) | 0.00th | v1 |
References (2)
- http://www.securityfocus.com/bid/97254 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://ics-cert.us-cert.gov/advisories/ICSA-17-089-02 x_refsource_MISCThird Party AdvisoryUS Government Resource
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/97254 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| https://ics-cert.us-cert.gov/advisories/ICSA-17-089-02 | x_refsource_MISCThird Party AdvisoryUS Government Resource |
Change history (0)
No recorded changes yet.