CVE-2017-6028 json
An Insufficiently Protected Credentials issue was discovered in Schneider Electric Modicon PLCs Modicon M241, all firmware versions, and Mo…
published 2017-06-30 9 y ago modified 2026-06-17 4 mo ago also EUVD-2017-15096
- cvss
- 9.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.3%
- EPSS 2.3% chance of exploitation in 30 days, percentile 83%
- public exploits
- 0
- none known
Summary
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.
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
cisa ICSA-17-089-02 updated cvss 7.5
Schneider Electric Modicon PLCs
-
Schneider Electric Software, LLC Modicon M221 < 1.5.0.0 Schneider Electric Software, LLC Modicon M241 < 4.0.5.11 Schneider Electric Software, LLC Modicon M251 < 4.0.5.11affected: mitigation “SoMachineBasic, Version 1.5, is available”
From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf
Exploit prediction
2.25% chance of exploitation in the next 30 days, higher than 83% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 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 | 5.0 | AV:N/AC:L/Au:N/C:P/I:N/A:N |
Affected products
- n/a Schneider Electric Modicon PLCs
Classification
- Weakness
-
- CWE-522 Insufficiently Protected Credentials
References
-
ics-cert.us-cert.gov
/advisories/ICSA-17-089-02
third-party-advisory, us-government-resource
-
securityfocus.com
/bid/97254
vdb-entry, third-party-advisory
Sources
- CVE List CVE-2017-6028
- NVD CVE-2017-6028
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.