CVE-2023-27396
FINS (Factory Interface Network Service) is a message communication protocol, which is designed to be used in closed FA (Factory…
- Published
- Updated
- Reserved
- Assigned by
- jpcert
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)
Timeline
ID reserved
By jpcert
- 3 months later
· 3 months later
Published
- 18 months later
· 18 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Modified | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 1.4% · top 28% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.
Weakness
Affected products
OMRON Corporation · Multiple OMRON products which implement FINS protocol
- affected 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
References (7)
- https://www.us-cert.gov/ics/advisories/icsa-19-346-02 (opens in a new tab)x_transferred
- https://www.ia.omron.com/product/vulnerability/OMSR-2023-003_en.pdf (opens in a new tab)x_transferred
- https://www.fa.omron.co.jp/product/vulnerability/OMSR-2023-003_ja.pdf (opens in a new tab)x_transferred
- https://jvn.jp/en/ta/JVNTA91513661/ (opens in a new tab)x_transferred
- https://jvn.jp/ta/JVNTA91513661/ (opens in a new tab)x_transferred
- https://www.us-cert.gov/ics/advisories/icsa-20-063-03 (opens in a new tab)x_transferred
- https://www.cisa.gov/uscert/ics/advisories/icsa-22-179-02 (opens in a new tab)x_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2023-27396)Record last updated .