Out-of-bounds Read in Jtekt Kostac Plc Programming Software
CVE-2023-22421
Out-of-bounds read vulnerability exists in Kostac PLC Programming Software (Former name: Koyo PLC Programming Software) Version 1.6.9.0 and earlier. The insufficient buffer size for the PLC program instructions leads to out-of-bounds read. As a result, opening a specially crafted project file may lead to information disclosure and/or arbitrary code execution.
Vulnerability class: Buffer Overflow
EPSS: 0.003 (24.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
Affected products
- Jtekt Kostac_plc_programming_software
- Jtekt Electronics Corporation Kostac Plc Programming Software (Former Name: Koyo Software) — versions Version 1.6.9.0 and earlier
Weakness classification (CWE)
Public proof-of-concept exploits
References
- vultures@jpcert.or.jp (Vendor Advisory)
- vultures@jpcert.or.jp (Vendor Advisory)
- vultures@jpcert.or.jp (Third Party Advisory)
Frequently asked questions
- What is CVE-2023-22421?
- CVE-2023-22421 is a high-severity vulnerability in Jtekt Kostac Plc Programming Software, classified under Out-of-bounds Read. CVSS score: 7.8/10. Published 2023-03-06.
- How severe is CVE-2023-22421?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2023-22421 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.