What is CVE-2023-2063?

CVE-2023-2063 is a medium-severity vulnerability in Mitsubishielectric Fx5-Enet\/ip, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 6.3/10. Published 2023-06-02.

How severe is CVE-2023-2063?

Medium severity. CVSS v3 base score is 6.3 out of 10.

Arbitrary file upload in Mitsubishielectric Fx5-Enet\/ip

CVE-2023-2063

Unrestricted Upload of File with Dangerous Type vulnerability in FTP function on Mitsubishi Electric Corporation MELSEC iQ-R Series EtherNet/IP module RJ71EIP91 and MELSEC iQ-F Series EtherNet/IP module FX5-ENET/IP allows a remote unauthenticated attacker to cause information disclosure, tampering, deletion or destruction via file upload/download. As a result, the attacker may be able to exploit this for further attacks.

Vulnerability class: Unrestricted File Upload

Published 2023-06-02 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.

EPSS exploit prediction

EPSS: 0.006 (48.0th percentile), scored 2026-10-20.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 48.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

References

www.mitsubishielectric.co.jp/psirt/vulnerability/pdf/2023-004.pdf (Vendor Advisory)
jvn.jp/vu/JVNVU92908006 (Third Party Advisory)

Frequently asked questions

What is CVE-2023-2063?: CVE-2023-2063 is a medium-severity vulnerability in Mitsubishielectric Fx5-Enet\/ip, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 6.3/10. Published 2023-06-02.
How severe is CVE-2023-2063?: Medium severity. CVSS v3 base score is 6.3 out of 10.