How severe is CVE-2020-14521?

CVE-2020-14521 has a CVSS 3.x base score of 8.3, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-14521 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-14521?

CVE-2020-14521 primarily affects Mitsubishielectric C Controller Interface Module Utility. In total, 46 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-14521?

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-2020-14521 published?

CVE-2020-14521 was published on 2022-02-11 and last updated on 2026-06-17.

CVE-2020-14521

CVE-2020-14521 is a high-severity vulnerability in Mitsubishielectric C Controller Interface Module Utility with a CVSS 3.x base score of 8.3. 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-276.

Key facts

Severity: High (CVSS 3.x base score 8.3)
CVSS v2: 7.5
EPSS exploit prediction: 1% (66th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-276
Affected product: Mitsubishielectric C Controller Interface Module Utility
Published: 2022-02-11
Last modified: 2026-06-17

Description

Multiple Mitsubishi Electric Factory Automation engineering software products have a malicious code execution vulnerability. A malicious attacker could use this vulnerability to obtain information, modify information, and cause a denial-of-service condition.

Frequently asked questions

What is CVE-2020-14521?: Multiple Mitsubishi Electric Factory Automation engineering software products have a malicious code execution vulnerability. A malicious attacker could use this vulnerability to obtain information, modify information, and cause a denial-of-service condition.
How severe is CVE-2020-14521?: CVE-2020-14521 has a CVSS 3.x base score of 8.3, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-14521 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-14521?: CVE-2020-14521 primarily affects Mitsubishielectric C Controller Interface Module Utility. In total, 46 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-14521?: 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-2020-14521 published?: CVE-2020-14521 was published on 2022-02-11 and last updated on 2026-06-17.

References

Affected products (46)

cpe:2.3:a:mitsubishielectric:c_controller_interface_module_utility:*:*:*:*:*:*:*:*
cpe:2.3:a:mitsubishielectric:c_controller_module_setting_and_monitoring_tool:*:*:*:*:*:*:*:*
cpe:2.3:a:mitsubishielectric:cc-link_ie_control_network_data_collector:1.00a:*:*:*:*:*:*:*
cpe:2.3:a:mitsubishielectric:cc-link_ie_field_network_data_collector:1.00a:*:*:*:*:*:*:*
cpe:2.3:a:mitsubishielectric:cc-link_ie_tsn_data_collector:1.00a:*:*:*:*:*:*:*
cpe:2.3:a:mitsubishielectric:cpu_module_logging_configuration_tool:*:*:*:*:*:*:*:*
cpe:2.3:a:mitsubishielectric:cw_configurator:*:*:*:*:*:*:*:*
cpe:2.3:a:mitsubishielectric:data_transfer:*:*:*:*:*:*:*:*
cpe:2.3:a:mitsubishielectric:ezsocket:*:*:*:*:*:*:*:*
cpe:2.3:a:mitsubishielectric:fr_configurator_sw3:*:*:*:*:*:*:*:*
cpe:2.3:a:mitsubishielectric:fr_configurator2:*:*:*:*:*:*:*:*
cpe:2.3:a:mitsubishielectric:gt_designer2_classic:*:*:*:*:*:*:*:*
cpe:2.3:a:mitsubishielectric:gt_softgot1000:*:*:*:*:*:*:*:*
cpe:2.3:a:mitsubishielectric:gt_softgot2000:*:*:*:*:*:*:*:*
cpe:2.3:a:mitsubishielectric:gx_developer:*:*:*:*:*:*:*:*
cpe:2.3:a:mitsubishielectric:gx_logviewer:*:*:*:*:*:*:*:*
cpe:2.3:a:mitsubishielectric:gx_works2:*:*:*:*:*:*:*:*
cpe:2.3:a:mitsubishielectric:gx_works3:*:*:*:*:*:*:*:*
cpe:2.3:a:mitsubishielectric:m_commdtm-io-link:*:*:*:*:*:*:*:*
cpe:2.3:a:mitsubishielectric:melfa-works:*:*:*:*:*:*:*:*
cpe:2.3:a:mitsubishielectric:melsec_wincpu_setting_utility:*:*:*:*:*:*:*:*
cpe:2.3:a:mitsubishielectric:melsoft_complete_clean_up_tool:*:*:*:*:*:*:*:*
cpe:2.3:a:mitsubishielectric:melsoft_em_software_development_kit:*:*:*:*:*:*:*:*
cpe:2.3:a:mitsubishielectric:melsoft_iq_appportal:*:*:*:*:*:*:*:*
cpe:2.3:a:mitsubishielectric:melsoft_navigator:*:*:*:*:*:*:*:*
cpe:2.3:a:mitsubishielectric:mi_configurator:*:*:*:*:*:*:*:*
cpe:2.3:a:mitsubishielectric:motion_control_setting:*:*:*:*:*:*:*:*
cpe:2.3:a:mitsubishielectric:motorizer:*:*:*:*:*:*:*:*
cpe:2.3:a:mitsubishielectric:mr_configurator2:*:*:*:*:*:*:*:*
cpe:2.3:a:mitsubishielectric:mt_works2:*:*:*:*:*:*:*:*
cpe:2.3:a:mitsubishielectric:mtconnect_data_collector:*:*:*:*:*:*:*:*
cpe:2.3:a:mitsubishielectric:mx_component:*:*:*:*:*:*:*:*
cpe:2.3:a:mitsubishielectric:mx_mesinterface:*:*:*:*:*:*:*:*
cpe:2.3:a:mitsubishielectric:mx_mesinterface-r:*:*:*:*:*:*:*:*
cpe:2.3:a:mitsubishielectric:mx_sheet:*:*:*:*:*:*:*:*
cpe:2.3:a:mitsubishielectric:position_board_utility_2:*:*:*:*:*:*:*:*
cpe:2.3:a:mitsubishielectric:px_developer:*:*:*:*:*:*:*:*
cpe:2.3:a:mitsubishielectric:rt_toolbox2:*:*:*:*:*:*:*:*
cpe:2.3:a:mitsubishielectric:rt_toolbox3:*:*:*:*:*:*:*:*
cpe:2.3:a:mitsubishielectric:setting\/monitoring_tools_for_the_c_controller_module:*:*:*:*:*:*:*:*

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