Security readout for executives and security teams
Schneider Electric Modicon M241 and M251 PLCs send web login credentials using Base64 encoding, which is not encryption. Anyone able to observe the relevant network traffic could recover credentials and log in to the PLC web application. Exposure is most likely where PLC web management traffic crosses shared, untrusted, flat, or remotely accessible OT networks. Public internet exposure would increase concern, but the provided sources do not state such exposure is typical. Treat this as an OT credential exposure risk. Prioritize sites where these PLCs are reachable beyond a tightly controlled engineering network, because stolen credentials could enable unauthorized web access to industrial controllers. Mitigation focus: Review Schneider Electric and ICSA-17-089-02 guidance for vendor-recommended fixes or compensating controls.; Restrict PLC web application access to trusted OT administration hosts only.; Segment M241 and M251 management traffic from general corporate and guest networks..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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CWE-522: Credential and account abuse lookup
Authentication and credential weaknesses can make valid-account abuse and credential telemetry useful review starting points. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2017-6028 mapping review
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Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
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CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://ics-cert.us-cert.gov/advisories/ICSA-17-089-02CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
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Insufficiently Protected Credentials
Insufficiently Protected Credentials represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.