High severity7.4NVD Advisory· Published Dec 14, 2020· Updated Jun 17, 2026
CVE-2020-5665
CVE-2020-5665
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
3- Range: <=1.060
- Range: firmware version 1.060 and earlier
- cpe:2.3:o:mitsubishielectric:melsec_iq-f_fx5u_cpu_firmware:*:*:*:*:*:*:*:*Range: <=1.060
Patches
Vulnerability mechanics
References
4- jvn.jp/vu/JVNVU95638588/index.htmlnvdThird Party Advisory
- us-cert.cisa.gov/ics/advisories/icsa-20-345-01nvdThird Party AdvisoryUS Government Resource
- www.mitsubishielectric.co.jp/psirt/vulnerability/pdf/2020-018.pdfnvdVendor Advisory
- www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2020-018_en.pdfnvdVendor Advisory
News mentions
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