CVE-2023-2062 — Missing Password Field Masking vulnerability in Mitsubishi Electric Corporation

Missing Password Field Masking vulnerability in Mitsubishi Electric Corporation EtherNet/IP configuration tools SW1DNN-EIPCT-BD and SW1DNN-EIPCTFX5-BD allows a remote unauthenticated attacker to know the password for MELSEC iQ-R Series EtherNet/IP module RJ71EIP91 and MELSEC iQ-F

01What is this vulnerability?

Missing Password Field Masking vulnerability in Mitsubishi Electric Corporation EtherNet/IP configuration tools SW1DNN-EIPCT-BD and SW1DNN-EIPCTFX5-BD allows a remote unauthenticated attacker to know the password for MELSEC iQ-R Series EtherNet/IP module RJ71EIP91 and MELSEC iQ-F Series EtherNet/IP module FX5-ENET/IP. This vulnerability results in authentication bypass vulnerability, which allows…

02Affected products

Vendor	Product	Versions
Mitsubishi Electric Corporation	EtherNet/IP Configuration tool for RJ71EIP91 SW1DNN	EIPCT-BD — Software version "1.01B" and prior
Mitsubishi Electric Corporation	EtherNet/IP Configuration tool for FX5	ENET/IP SW1DNN-EIPCTFX5-BD — Software version "1.01B" and prior

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2023-06-02T04:04:28.648Z
• Last modified: 2025-03-05T18:58:15.223Z

09References

• www.mitsubishielectric.co.jp — https://www.mitsubishielectric.co.jp/psirt/vulnerability/pdf/2023-004.pdf
• jvn.jp — https://jvn.jp/vu/JVNVU92908006
• www.cisa.gov — https://www.cisa.gov/news-events/ics-advisories/icsa-23-157-02