How severe is CVE-2023-4625?

CVE-2023-4625 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2023-4625 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-4625?

CVE-2023-4625 primarily affects Mitsubishielectric Fx5u-32mt/es Firmware. In total, 63 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-4625?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-4625 published?

CVE-2023-4625 was published on 2023-11-06 and last updated on 2026-06-17.

CVE-2023-4625

CVE-2023-4625 is a medium-severity vulnerability in Mitsubishielectric Fx5u-32mt/es Firmware with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-307.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 1% (57th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-307
Affected product: Mitsubishielectric Fx5u-32mt/es Firmware
Published: 2023-11-06
Last modified: 2026-06-17

Description

Improper Restriction of Excessive Authentication Attempts vulnerability in Mitsubishi Electric Corporation MELSEC iQ-F/iQ-R Series CPU modules Web server function allows a remote unauthenticated attacker to prevent legitimate users from logging into the Web server function for a certain period after the attacker has attempted to log in illegally by continuously attempting unauthorized login to the Web server function. The impact of this vulnerability will persist while the attacker continues to attempt unauthorized login.

Frequently asked questions

What is CVE-2023-4625?: Improper Restriction of Excessive Authentication Attempts vulnerability in Mitsubishi Electric Corporation MELSEC iQ-F/iQ-R Series CPU modules Web server function allows a remote unauthenticated attacker to prevent legitimate users from logging into the Web server function for a certain period after the attacker has attempted to log in illegally by continuously attempting unauthorized login to the Web server function. The impact of this vulnerability will persist while the attacker continues to attempt unauthorized login.
How severe is CVE-2023-4625?: CVE-2023-4625 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2023-4625 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-4625?: CVE-2023-4625 primarily affects Mitsubishielectric Fx5u-32mt/es Firmware. In total, 63 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-4625?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-4625 published?: CVE-2023-4625 was published on 2023-11-06 and last updated on 2026-06-17.

References

Affected products (63)

cpe:2.3:o:mitsubishielectric:fx5u-32mt\/es_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx5u-64mt\/es_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx5u-80mt\/es_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx5u-32mr\/es_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx5u-64mr\/es_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx5u-80mr\/es_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx5u-32mt\/ds_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx5u-64mt\/ds_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx5u-80mt\/ds_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx5u-32mr\/ds_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx5u-64mr\/ds_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx5u-80mr\/ds_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx5u-32mt\/ess_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx5u-64mt\/ess_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx5u-80mt\/ess_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx5u-32mt\/dss_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx5u-64mt\/dss_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx5u-80mt\/dss_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx5uc-32mt\/d_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx5uc-64mt\/d_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx5uc-96mt\/d_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx5uc-32mt\/dss_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx5uc-64mt\/dss_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx5uc-96mt\/dss_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx5uc-32mt\/ds-ts_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx5uc-32mt\/dss-ts_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx5uc-32mr\/ds-ts_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx5uj-24mt\/es_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx5uj-40mt\/es_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx5uj-60mt\/es_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx5uj-24mr\/es_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx5uj-40mr\/es_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx5uj-60mr\/es_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx5uj-24mt\/ess_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx5uj-40mt\/ess_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx5uj-60mt\/ess_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx5uj-24mt\/ds_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx5uj-40mt\/ds_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx5uj-60mt\/ds_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx5uj-24mr\/ds_firmware:-:*:*:*:*:*:*:*

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