{"cve":"CVE-2023-27396","nvd":{"published":"2023-06-19T05:15:09.187","modified":"2026-06-17T05:44:56.810","status":"Modified","description":"FINS (Factory Interface Network Service) is a message communication protocol, which is designed to be used in closed FA (Factory Automation) networks, and is used in FA networks composed of OMRON products. Multiple OMRON products that implement FINS protocol contain following security issues -- (1)Plaintext communication, and (2)No authentication required. When FINS messages are intercepted, the contents may be retrieved. When arbitrary FINS messages are injected, any commands may be executed on, or the system information may be retrieved from, the affected device. Affected products and versions are as follows: SYSMAC CS-series CPU Units, all versions, SYSMAC CJ-series CPU Units, all versions, SYSMAC CP-series CPU Units, all versions, SYSMAC NJ-series CPU Units, all versions, SYSMAC NX1P-series CPU Units, all versions, SYSMAC NX102-series CPU Units, all versions, and SYSMAC NX7 Database Connection CPU Units (Ver.1.16 or later)","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-306"],"references":["https://jvn.jp/en/ta/JVNTA91513661/","https://jvn.jp/ta/JVNTA91513661/","https://www.cisa.gov/uscert/ics/advisories/icsa-22-179-02","https://www.fa.omron.co.jp/product/vulnerability/OMSR-2023-003_ja.pdf","https://www.ia.omron.com/product/vulnerability/OMSR-2023-003_en.pdf"],"products":["omron:cj2h-cpu64-eip_firmware","omron:cj2h-cpu64_firmware","omron:cj2h-cpu65-eip_firmware","omron:cj2h-cpu65_firmware","omron:cj2h-cpu66-eip_firmware","omron:cj2h-cpu66_firmware","omron:cj2h-cpu67-eip_firmware","omron:cj2h-cpu67_firmware","omron:cj2h-cpu68-eip_firmware","omron:cj2h-cpu68_firmware","omron:cj2m-cpu11_firmware","omron:cj2m-cpu12_firmware","omron:cj2m-cpu13_firmware","omron:cj2m-cpu14_firmware","omron:cj2m-cpu15_firmware","omron:cj2m-cpu31_firmware","omron:cj2m-cpu32_firmware","omron:cj2m-cpu33_firmware","omron:cj2m-cpu34_firmware","omron:cj2m-cpu35_firmware","omron:cj2m-md211_firmware","omron:cj2m-md212_firmware","omron:cp1e-e10dr-a_firmware","omron:cp1e-e10dr-d_firmware","omron:cp1e-e10dt-a_firmware","omron:cp1e-e10dt-d_firmware","omron:cp1e-e10dt1-a_firmware","omron:cp1e-e10dt1-d_firmware","omron:cp1e-e14dr-a_firmware","omron:cp1e-e14sdr-a_firmware","omron:cp1e-e20dr-a_firmware","omron:cp1e-e20sdr-a_firmware","omron:cp1e-e30dr-a_firmware","omron:cp1e-e30sdr-a_firmware","omron:cp1e-e40dr-a_firmware","omron:cp1e-e40sdr-a_firmware","omron:cp1e-e60sdr-a_firmware","omron:cp1e-n14dr-a_firmware","omron:cp1e-n14dr-d_firmware","omron:cp1e-n14dt-a_firmware","omron:cp1e-n14dt-d_firmware","omron:cp1e-n14dt1-a_firmware","omron:cp1e-n14dt1-d_firmware","omron:cp1e-n20dr-a_firmware","omron:cp1e-n20dr-d_firmware","omron:cp1e-n20dt-a_firmware","omron:cp1e-n20dt-d_firmware","omron:cp1e-n20dt1-a_firmware","omron:cp1e-n20dt1-d_firmware","omron:cp1e-n30dr-a_firmware"],"source":"nvd","synced_at":"2026-10-19T21:38:24.161619714+00:00"},"epss":{"cve":"CVE-2023-27396","score":0.01374,"percentile":0.7201,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}