Security readout for executives and security teams
Plain-English summary
CVE-2020-14523 affects multiple Mitsubishi Electric factory automation engineering and configuration products. A successful attack could lead to arbitrary code execution, which may compromise engineering workstations or related automation environments. The score is high, but the CVSS data indicates user interaction and high attack complexity are required.
Executive priority
Treat this as a high-priority OT engineering workstation risk. It is not evidenced as actively exploited in the supplied sources, but successful compromise could affect sensitive automation tooling and operational environments.
Technical view
The issue is a CWE-22 path traversal vulnerability across listed Mitsubishi Electric FA products. CVSS 3.1 is 8.3 with network attack vector, no privileges required, user interaction required, high complexity, changed scope, and high confidentiality, integrity, and availability impact.
Likely exposure
Organizations using Mitsubishi Electric MELSOFT, configurator, motion, or related FA engineering products are the likely exposure group. Exposure is most relevant on engineering workstations and OT support systems where affected software or modules are installed.
Exploitation context
The provided bundle does not show CISA KEV listing or active exploitation evidence. The CVSS vector suggests exploitation is not fully automatic because user interaction is required and attack complexity is high.
Researcher notes
Evidence is limited to the bundled CVE metadata and advisory references. Affected versions are mostly unspecified in the bundle, so validation depends on vendor advisory details rather than CPE matching alone.
Mitigation direction
- Check Mitsubishi PSIRT advisory 2020-008 for product-specific fixes or workarounds.
- Review CISA ICSA-20-212-03 and JVN guidance before remediation planning.
- Inventory listed Mitsubishi Electric FA products across engineering workstations.
- Prioritize updates for systems connected to OT networks or handling project files.
- Limit handling of untrusted automation project or configuration files pending vendor guidance.
Validation and detection
- Search asset inventory for each affected Mitsubishi Electric product listed in the bundle.
- Confirm installed versions against Mitsubishi Electric PSIRT advisory 2020-008.
- Identify workstations that exchange project files with vendors or external parties.
- Check whether OT engineering systems are isolated from general user networks.
- Document any unsupported or unverifiable installations for risk acceptance or replacement.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-22: File access and web shell behavior lookup
File traversal and upload weaknesses can lead teams to review file, web shell, execution, and collection telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupFile access behavior lookup
The CVE wording references file access or upload behavior, so file telemetry and web shell review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2020-14523 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 8.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H1.66Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8.3HighVector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://www.cisa.gov/uscert/ics/advisories/icsa-20-212-03CVE reference · x_refsource_MISC
- https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2020-008_en.pdfCVE reference · x_refsource_MISC
- https://jvn.jp/vu/JVNVU90224831/CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.