CVE-2020-5665
HIGH
7.4
CVSS Score
Published: December 14, 2020 at 02:25 AM UTC
Updated: June 17, 2026 at 03:22 AM UTC
2 products affected across 1 vendorMELSEC Iq F FX5U CPU FirmwareMELSEC Iq F FX5U CPU
Using MELSEC iQ-F series FX5U(C) CPU unit by Mitsubishi Electric Corporation?
Get instant alerts when new vulnerabilities affect MELSEC iQ-F series FX5U(C) CPU unit - before attackers find them.
Real-time alertsTrack your software stackFree plan available
Severity
HIGH7.4
Exploit prediction
EPSS 1%
Description
Improper check or handling of exceptional conditions in MELSEC iQ-F series FX5U(C) CPU unit firmware version 1.060 and earlier allows an attacker to cause a denial-of-service (DoS) condition on program execution and communication by sending a specially crafted ARP packet.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v ≤ 1.060
mitsubishielectric-melsec-iq-f-fx5u-cpu (same device)
v ≤ 1.060
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (4)
x_refsource_MISCThird Party Advisory
Source: [email protected]
https://jvn.jp/vu/JVNVU95638588/index.htmlx_refsource_MISCThird Party AdvisoryUS Government Resource
Source: [email protected]
https://us-cert.cisa.gov/ics/advisories/icsa-20-345-01x_refsource_MISCVendor Advisory
Source: [email protected]
https://www.mitsubishielectric.co.jp/psirt/vulnerability/pdf/2020-018.pdfx_refsource_MISCVendor Advisory
Source: [email protected]
https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2020-018_en.pdfCVSS
- Attack Vector
- ADJACENT_NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- CHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
NVD-CWE-noinfo
Get alerted
Stop reading CVE feeds looking for your own stack
Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.
Free plan, no card