How severe is CVE-2023-2846?

CVE-2023-2846 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2023-2846 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-2846?

CVE-2023-2846 primarily affects Mitsubishielectric Fx3u-16mr/es Firmware. In total, 150 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-2846?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2023-2846 published?

CVE-2023-2846 was published on 2023-06-30 and last updated on 2026-06-17.

CVE-2023-2846

CVE-2023-2846 is a high-severity vulnerability in Mitsubishielectric Fx3u-16mr/es Firmware with a CVSS 3.x base score of 7.5. 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-294.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (67th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-294
Affected product: Mitsubishielectric Fx3u-16mr/es Firmware
Published: 2023-06-30
Last modified: 2026-06-17

Description

Authentication Bypass by Capture-replay vulnerability in Mitsubishi Electric Corporation MELSEC iQ-F Series main modules allows a remote unauthenticated attacker to cancel the password/keyword setting and login to the affected products by sending specially crafted packets.

Frequently asked questions

What is CVE-2023-2846?: Authentication Bypass by Capture-replay vulnerability in Mitsubishi Electric Corporation MELSEC iQ-F Series main modules allows a remote unauthenticated attacker to cancel the password/keyword setting and login to the affected products by sending specially crafted packets.
How severe is CVE-2023-2846?: CVE-2023-2846 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2023-2846 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-2846?: CVE-2023-2846 primarily affects Mitsubishielectric Fx3u-16mr/es Firmware. In total, 150 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-2846?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-2846 published?: CVE-2023-2846 was published on 2023-06-30 and last updated on 2026-06-17.

References

Affected products (150)

cpe:2.3:o:mitsubishielectric:fx3u-16mr\/es_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx3u-16mt\/es_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx3u-16mt\/ess_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx3u-32mr\/es_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx3u-32mt\/es_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx3u-32mt\/ess_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx3u-48mr\/es_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx3u-48mt\/es_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx3u-48mt\/ess_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx3u-64mr\/es_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx3u-64mt\/es_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx3u-64mt\/ess_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx3u-80mr\/es_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx3u-80mt\/es_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx3u-80mt\/ess_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx3u-128mr\/es_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx3u-128mt\/es_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx3u-128mt\/ess_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx3u-16mr\/ds_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx3u-16mt\/ds_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx3u-16mt\/dss_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx3u-32mr\/ds_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx3u-32mt\/ds_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx3u-32mt\/dss_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx3u-48mr\/ds_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx3u-48mt\/ds_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx3u-48mt\/dss_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx3u-64mr\/ds_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx3u-64mt\/ds_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx3u-64mt\/dss_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx3u-80mr\/ds_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx3u-80mt\/ds_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx3u-80mt\/dss_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx3u-32mr\/ua1_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx3u-64mr\/ua1_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx3u-32ms\/es_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx3u-64ms\/es_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx3u-16mr\/es-a_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx3u-16mt\/es-a_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mitsubishielectric:fx3u-32mr\/es-a_firmware:-:*:*:*:*:*:*:*

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