What is the CVSS score of CVE-2023-0457?

CVE-2023-0457 has a CVSS 3.1 base score of 7.5 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N. EPSS exploitation probability: 1.2%.

Fx5Uc 32Mt D Firmware CVE-2023-0457

HIGH

Plaintext Storage of a Password (CWE-256)

2023-03-03 Mitsubishielectric.Psirt@yd.MitsubishiElectric.co.jp

Information Disclosure Fx5Uc 32Mt D Firmware Fx5Uc 32Mt Dss Firmware Fx5Uc 32Mt Ds Ts Firmware Fx5Uc 32Mt Dss Ts Firmware Fx5Uj 24Mr Es Firmware Fx5Uc 32Mr Ds Ts Firmware Fx5Uj 24Mt Es Firmware Fx5Uj 24Mt Ess Firmware Fx5Uj 40Mr Es Firmware Fx5Uj 40Mt Es Firmware Fx5Uj 40Mt Ess Firmware Fx5Uj 60Mr Es Firmware Fx5Uj 60Mt Es Firmware Fx5Uj 60Mt Ess Firmware Fx5 Enet Firmware Fx5 Enet Ip Firmware Fx5Uc 64Mt D Firmware Fx5Uc 96Mt D Firmware Fx5Uc 64Mt Dss Firmware Fx5Uc 96Mt Dss Firmware Fx5Uj 24Mt Es A Firmware Fx5Uj 40Mt Es A Firmware Fx5Uj 60Mt Es A Firmware Fx5Uj 24Mr Es A Firmware Fx5Uj 40Mr Es A Firmware Fx5Uj 60Mr Es A Firmware Fx5S 30Mt Es Firmware Fx5S 40Mt Es Firmware Fx5S 60Mt Es Firmware Fx5S 80Mt Es Firmware Fx5S 30Mr Es Firmware Fx5S 40Mr Es Firmware Fx5S 60Mr Es Firmware Fx5S 80Mr Es Firmware Fx5S 30Mt Ess Firmware Fx5S 40Mt Ess Firmware Fx5S 60Mt Ess Firmware Fx5S 80Mt Ess Firmware Mitsubishielectric

7.5

CVSS 3.1 · NVD

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Vulnerability Assessment

Weakness	CWE CWE-256 OWASP Top 10:2025 A06:2025 - Insecure Design ASVS 5.0 V6 - Authentication Credential storage protection
Impact	CVSS score of 7.5 (HIGH). Attack characteristics: network attack vector, low complexity, no privileges required, no user interaction not required.
Exploit ScenarioDerived	This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the high-severity affected system.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).

No patch listed yet 1.2% exploitation probability (EPSS)

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AnalysisAI

Plaintext Storage of a Password vulnerability in Mitsubishi Electric Corporation MELSEC iQ-F Series, MELSEC iQ-R Series, MELSEC-Q Series and MELSEC-L Series allows a remote unauthenticated attacker. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Affects your stack

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Technical ContextAI · show details

This vulnerability is classified under CWE-256. Plaintext Storage of a Password vulnerability in Mitsubishi Electric Corporation MELSEC iQ-F Series, MELSEC iQ-R Series, MELSEC-Q Series and MELSEC-L Series allows a remote unauthenticated attacker to disclose plaintext credentials stored in project files and login into FTP server or Web server. Affected products include: Mitsubishielectric Fx5Uc-32Mr\/Ds-Ts Firmware, Mitsubishielectric Fx5Uc-32Mt\/D Firmware, Mitsubishielectric Fx5Uc-32Mt\/Dss Firmware, Mitsubishielectric Fx5Uc-32Mt\/Dss-Ts Firmware, Mitsubishielectric Fx5Uc-32Mt\/Ds-Ts Firmware.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 7.5 HIGH

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

DescriptionNVD

Plaintext Storage of a Password vulnerability in Mitsubishi Electric Corporation MELSEC iQ-F Series, MELSEC iQ-R Series, MELSEC-Q Series and MELSEC-L Series allows a remote unauthenticated attacker to disclose plaintext credentials stored in project files and login into FTP server or Web server.

Threat Intelligence Overview

EPSS Score

1.2%

Top 36% exploitable

Data Quality

2 sources

Confidence: Low

NVD

CVE.org

EPSS

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity HIGH

CISA KEV No

Public POC No

EPSS 1.2%

Patch available No

Active threat No

Deciding rule

HIGH severity (CVSS 7.0-8.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Scheduled

Exploitation· derived

None

System Exposure· derived

Open

Automatable· derived

Yes

Human Impact· derived

Medium

Priority Score

Low Medium High Critical

KEV: 0

EPSS: +1

CVSS: +38

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Information Disclosure MEDIUM

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

Affected Products (CPE)NVD

cpe:2.3:o:mitsubishielectric:fx5uc-32mr\/ds-ts_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:mitsubishielectric:fx5uc-32mt\/d_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:mitsubishielectric:fx5uc-32mt\/dss_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:mitsubishielectric:fx5uc-32mt\/dss-ts_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:mitsubishielectric:fx5uc-32mt\/ds-ts_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:mitsubishielectric:fx5uc-64mt\/d_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:mitsubishielectric:fx5uc-64mt\/dss_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:mitsubishielectric:fx5uc-96mt\/d_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:mitsubishielectric:fx5uc-96mt\/dss_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:mitsubishielectric:fx5uj-24mr\/es_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:mitsubishielectric:fx5uj-24mr\/es-a_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:mitsubishielectric:fx5uj-24mt\/es_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:mitsubishielectric:fx5uj-24mt\/es-a_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:mitsubishielectric:fx5uj-24mt\/ess_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:mitsubishielectric:fx5uj-40mr\/es_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:mitsubishielectric:fx5uj-40mr\/es-a_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:mitsubishielectric:fx5uj-40mt\/es_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:mitsubishielectric:fx5uj-40mt\/es-a_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:mitsubishielectric:fx5uj-40mt\/ess_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:mitsubishielectric:fx5uj-60mr\/es_firmware:*:*:*:*:*:*:*:*

+ 18 more

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Same weakness CWE-256 – Plaintext Storage of a Password

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CVE-2025-68613 HIGH POC

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References

Advisories & patches

ADVISORY https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2022-023_en.pdf REF https://jvn.jp/vu/JVNVU93891523/index.html REF https://www.cisa.gov/news-events/ics-advisories/icsa-23-061-01

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