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Fencer Vulns
medium 4.6

CVE-2024-41927 json

Cleartext transmission of sensitive information vulnerability exists in multiple IDEC PLCs.

published 2024-09-04 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-39278

cvss
4.6
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 4%
public exploits
0
none known

Summary

Cleartext transmission of sensitive information vulnerability exists in multiple IDEC PLCs. If an attacker sends a specific command to PLC's serial communication port, user credentials may be obtained. As a result, the program of the PLC may be obtained, and the PLC may be manipulated.

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-24-263-02 updated cvss 4.6

IDEC Products (Update A)

  • IDEC Corporation FC6A Series MICROSmart All-in-One CPU module <=Ver.2.60 IDEC Corporation FC6A Series MICROSmart Plus CPU module <=Ver.2.40 IDEC Corporation FC6B Series MICROSmart All-in-One CPU module <=Ver.2.60 IDEC Corporation FC6B Series MICROSmart Plus CPU module <=Ver.2.60 IDEC Corporation FT1A Series SmartAXIS Pro/Lite <=Ver.2.41
    affected: vendor fix, mitigation “Apply the appropriate software update according to the information provided by the developer:” us.idec.com

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

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
2 y ago

Exploit prediction

0.15% chance of exploitation in the next 30 days, higher than 4% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 4.6 CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD 3.1 4.6 CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CNA 3.1 4.6 CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

  • IDEC Corporation FC6A Series MICROSmart All-in-One CPU module
  • IDEC Corporation FC6B Series MICROSmart All-in-One CPU module
  • IDEC Corporation FC6A Series MICROSmart Plus CPU module
  • IDEC Corporation FC6B Series MICROSmart Plus CPU module
  • IDEC Corporation FT1A Series SmartAXIS Pro/Lite

Classification

Weakness
  • CWE-319 Cleartext Transmission of Sensitive Information

References

Sources

Fencer Vulns 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.