CVE intelligence and bounded remediation

CVE-2020-14521 — Multiple Mitsubishi Electric Factory Automation engineering software products have a malicious code execution vulnerability

Critical CVSS 9.8

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.

Severity
Critical
CVSS
9.8 (3.1)
Published
2022-02-11
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-428, CWE-276

Affected products

  • mitsubishielectric / c_controller_interface_module_utility
  • mitsubishielectric / c_controller_module_setting_and_monitoring_tool
  • mitsubishielectric / cc-link_ie_control_network_data_collector / 1.00a
  • mitsubishielectric / cc-link_ie_field_network_data_collector / 1.00a
  • mitsubishielectric / cc-link_ie_tsn_data_collector / 1.00a
  • mitsubishielectric / cpu_module_logging_configuration_tool

Showing 6 representative product identities from 46 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Privilege escalation and unsafe privilege management

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Check exposure

  • Map service accounts, operating-system identities, roles, capabilities, impersonation, set-user transitions, and administrative helper paths.
  • Determine whether untrusted users or lower-privilege processes can reach the affected transition or modify inputs it trusts.
  • Review file, socket, registry, device, job, container, and cloud-role permissions used before and after privilege changes.

Remediate safely

  • Apply the supported fix and redesign privileged operations as a minimal, authenticated, allowlisted interface.
  • Drop privileges before processing untrusted input, verify the drop succeeds, and remove unnecessary roles, capabilities, and write permissions.
  • Validate ownership and permissions at time of use and add explicit lower-to-higher privilege boundary tests.

Authoritative sources

Complete CVE record and remediation plan

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