CVE-2024-41927: Cleartext transmission of sensitive information vulnerability exists in multiple IDEC PLCs
17
Routine
MEDIUM 4.6UPGRADEUPGRADEUPGRADE
CVE-2024-41927 is a medium-severity flaw (CVSS 4.6) affecting kit-fc6a-24-kc firmware, kit-fc6a-24-pc firmware, kit-fc6a-24-ra firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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.
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
Published CVE record published
Updated Record last modified
idec kit-fc6a-24-kc firmware UPGRADE
Affected: <= 2.60
Fixed in: newer than 2.60
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
idec kit-fc6a-24-pc firmware UPGRADE
Affected: <= 2.60
Fixed in: newer than 2.60
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
idec kit-fc6a-24-ra firmware UPGRADE
Affected: <= 2.60
Fixed in: newer than 2.60
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
idec kit-fc6a-24-ra-hg1g firmware UPGRADE
Affected: <= 2.60
Fixed in: newer than 2.60
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
idec kit-fc6a-24-ra-hg2g-5tn firmware UPGRADE
Affected: <= 2.60
Fixed in: newer than 2.60
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
idec kit-fc6a-24-ra-hg2g-5tt firmware UPGRADE
Affected: <= 2.60
Fixed in: newer than 2.60
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
Verify at the official sourceNVD · CVE Program · Report a problem with this page Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2024-41927?
kit-fc6a-24-kc firmware: upgrade to newer than 2.60; kit-fc6a-24-pc firmware: upgrade to newer than 2.60; kit-fc6a-24-ra firmware: upgrade to newer than 2.60. Exact commands for each OS are on this page.
Is CVE-2024-41927 being exploited?
CVE-2024-41927 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2024-41927 affect?
CVE-2024-41927 affects kit-fc6a-24-kc firmware, kit-fc6a-24-pc firmware, kit-fc6a-24-ra firmware. Severity is medium (CVSS 4.6). 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 ma
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