{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2020-5665 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2020-5665 yet. Limit exposure of the affected software until one is available.","what":"CVE-2020-5665 is a high-severity denial of service vulnerability in Mitsubishi Electric Corporation MELSEC iQ-F series FX5U(C) CPU unit, published on 14 Dec 2020. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2020-5665 and fix it if it is affected.\n\nWhat it is: CVE-2020-5665 is a high-severity denial of service vulnerability in Mitsubishi Electric Corporation MELSEC iQ-F series FX5U(C) CPU unit, published on 14 Dec 2020. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2020-5665 in the wild and no public exploit code.\n\nAffected product: Mitsubishi Electric Corporation MELSEC iQ-F series FX5U(C) CPU unit. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2020-5665/ (Markdown: https://insights.sbomify.com/CVE-2020-5665/index.md)","id":"CVE-2020-5665","markdown":"https://insights.sbomify.com/CVE-2020-5665/index.md","name":"CVE-2020-5665","record":{"aliases":["GHSA-r9xw-pv6r-fxr3"],"analysis":{"component_type":"ics_ot","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"PLC CPU firmware","requires_auth":"none","summary":"An attacker can cause a denial-of-service condition on Mitsubishi MELSEC PLCs by sending a specially crafted ARP packet.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"jpcert","cpe":[{"product":"melsec_iq-f_fx5u_cpu_firmware","vendor":"mitsubishielectric"}],"cvss":{"score":7.4,"severity":"high","source":"nvd","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","version":"3.1"},"cwes":[],"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.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":null,"headline":"Denial of service in MELSEC iQ-F series FX5U(C) CPU unit","id":"CVE-2020-5665","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2020"},"n_packages":0,"n_references":4,"next":{"headline":"Denial of service in MELSEC iQ-R Series CPU Modules","id":"CVE-2020-5666"},"packages":[],"prev":{"headline":"Deserialization in XooNIps","id":"CVE-2020-5664"},"products":["MELSEC iQ-F series FX5U(C) CPU unit"],"published":"2020-12-14","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-04","vendors":["Mitsubishi Electric Corporation"]},"summary":"An attacker can cause a denial-of-service condition on Mitsubishi MELSEC PLCs by sending a specially crafted ARP packet.","url":"https://insights.sbomify.com/CVE-2020-5665/"}