CVE-2024-47134: Out-of-bounds write vulnerability exists in Kostac PLC Programming Software (Former name: Koyo PLC Programming

Routine

HIGH 7.8UPGRADE

CVE-2024-47134 is a high-severity flaw (CVSS 7.8) affecting kostac plc programming software. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Out-of-bounds write vulnerability exists in Kostac PLC Programming Software (Former name: Koyo PLC Programming Software) Version 1.6.14.0 and earlier. Having a user open a specially crafted project file which was saved using Kostac PLC Programming Software Version 1.6.9.0 and earlier may cause a denial-of-service (DoS) condition, arbitrary code execution, and/or information disclosure because the issues exist in parsing of KPP project files.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.3% (top 80%)
CISA exploited list	No
Weakness	CWE-787
Published	2024-10-03
Last modified	2026-06-17

Publisher (CNA): JPCERT/CC · Vendor: electronics.jtekt

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2024-10-03 03:15 UTCPublished CVE record published
2026-06-17 07:56 UTCUpdated Record last modified

electronics.jtekt kostac plc programming software UPGRADE

Affected: < 1.6.9.0 · >= 1.6.10.0 and <= 1.6.14.0

Fixed in: 1.6.9.0

Safe to downgrade to: a release before 1.6.10.0

1. Check installed version

apt-cache policy kostac-plc-programming-software || rpm -q kostac-plc-programming-software || kostac-plc-programming-software --version

2. UPGRADE to 1.6.9.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade kostac-plc-programming-software

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade kostac-plc-programming-software

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 1.6.10.0 (Debian / Ubuntu)

apt-cache madison kostac-plc-programming-software sudo apt install kostac-plc-programming-software=<VERSION_BEFORE_1.6.10.0> sudo apt-mark hold kostac-plc-programming-software

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list kostac-plc-programming-software sudo dnf downgrade kostac-plc-programming-software-<VERSION_BEFORE_1.6.10.0> sudo dnf versionlock add kostac-plc-programming-software

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · 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-2024-47134?

kostac plc programming software: upgrade to 1.6.9.0. Exact commands for each OS are on this page.

Is CVE-2024-47134 being exploited?

CVE-2024-47134 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-2024-47134 affect?

CVE-2024-47134 affects kostac plc programming software. Severity is high (CVSS 7.8). Out-of-bounds write vulnerability exists in Kostac PLC Programming Software (Former name: Koyo PLC Programming Software) Version 1.6.14.0 and earlier. Having a user open a specially crafted project file which was saved using Kostac PLC Prog

How urgent is CVE-2024-47134?

Priority 32/100. High severity

References

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