CVE-2020-5665
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.03%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.4 HIGHCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
- EPSS
- 1.03% probability · 62th percentile
- CISA KEV
- Not listed
- Affected
- mitsubishielectric/melsec iq-f fx5u cpu firmware
- Source
- vultures@jpcert.or.jp
References
- https://jvn.jp/vu/JVNVU95638588/index.htmlThird Party Advisory
- https://us-cert.cisa.gov/ics/advisories/icsa-20-345-01Third Party Advisory, US Government Resource
- https://www.mitsubishielectric.co.jp/psirt/vulnerability/pdf/2020-018.pdfVendor Advisory
- https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2020-018_en.pdfVendor Advisory
- https://jvn.jp/vu/JVNVU95638588/index.htmlThird Party Advisory
- https://us-cert.cisa.gov/ics/advisories/icsa-20-345-01Third Party Advisory, US Government Resource
- https://www.mitsubishielectric.co.jp/psirt/vulnerability/pdf/2020-018.pdfVendor Advisory
- https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2020-018_en.pdfVendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.