HOMEVULNERABILITIESCVE-2020-14521
CRITICAL

CVE-2020-14521

CWE-428Published: February 11, 2022· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2020-14521 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

mitsubishielectric60 product(s)
c controller interface module utilityc controller module setting and monitoring toolcc-link ie control network data collectorcc-link ie field network data collectorcc-link ie tsn data collectorcpu module logging configuration toolcw configuratordata transferezsocketfr configurator sw3fr configurator2gt designer2 classic+48
Source: NVD CPE · 60 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://www.cisa.gov/uscert/ics/advisories/icsa-20-212-04
ADVISORYhttps://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2020-007_en.pdf
ADVISORYhttps://www.cisa.gov/uscert/ics/advisories/icsa-20-212-04
ADVISORYhttps://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2020-007_en.pdf

All References (4)

→
https://www.cisa.gov/uscert/ics/advisories/icsa-20-212-04Third Party Advisory · US Government Resource
→
https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2020-007_en.pdfVendor Advisory
→
https://www.cisa.gov/uscert/ics/advisories/icsa-20-212-04Third Party Advisory · US Government Resource
→
https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2020-007_en.pdfVendor Advisory

Quick Facts

CVE IDCVE-2020-14521
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-428
CISA KEVNo
Affected1 vendor(s)
PublishedFeb 11, 2022

Related CVEs (CWE-428)

CVE-2020-9292
9.8
CVE-2019-8459
9.8
CVE-2022-36344
9.8
CVE-2019-17658
9.8
CVE-2025-8070
9.2
CVE-2024-24722
9.1

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2020-14521 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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