CVE-2024-47135: Stack-based buffer overflow vulnerability exists in Kostac PLC Programming Software (Former name: Koyo PLC Pro

Q: How do I fix CVE-2024-47135?

kostac plc: upgrade to 1.6.15.0. Exact commands for each OS are on this page.

Q: Is CVE-2024-47135 being exploited?

CVE-2024-47135 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2024-47135 affect?

CVE-2024-47135 affects kostac plc. Severity is high (CVSS 7.8). Stack-based buffer overflow 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

Routine

HIGH 7.8UPGRADE

CVE-2024-47135 is a high-severity flaw (CVSS 7.8) affecting kostac plc. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Stack-based buffer overflow 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 fil

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 78%)
CISA exploited list	No
Weakness	CWE-121, CWE-787
Published	2024-10-03
Last modified	2026-06-17

Publisher (CNA): JPCERT/CC · Vendor: 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

jtekt kostac plc UPGRADE

Affected: < 1.6.15.0

Fixed in: 1.6.15.0

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 1.6.15.0 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade kostac-plc

Note

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

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-2024-47135?

kostac plc: upgrade to 1.6.15.0. Exact commands for each OS are on this page.

Is CVE-2024-47135 being exploited?

CVE-2024-47135 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-2024-47135 affect?

CVE-2024-47135 affects kostac plc. Severity is high (CVSS 7.8). Stack-based buffer overflow 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

How urgent is CVE-2024-47135?

Priority 33/100. High severity

Related CVEs

CVE-2024-47136 HIGH 7.8 UPGRADE Out-of-bounds read vulnerability exists in Kostac PLC Programming Software (Former name: Koyo PLC Programming
CVE-2023-41375 HIGH 7.8 UPGRADE Use after free vulnerability exists in Kostac PLC Programming Software Version 1.6.11.0
CVE-2023-41374 HIGH 7.8 UPGRADE Double free issue exists in Kostac PLC Programming Software Version 1.6.11.0 and earlier

References

← Back to latest CVEs