{"answers":{"affected":"It affects 8 products.","exploited":"There is no known exploitation of CVE-2020-5666 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2020-5666 yet. Limit exposure of the affected software until one is available.","what":"CVE-2020-5666 is a high-severity denial of service vulnerability in Mitsubishi Electric Corporation MELSEC iQ-R Series CPU Modules, published on 16 Nov 2020. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2020-5666 and fix it if it is affected.\n\nWhat it is: CVE-2020-5666 is a high-severity denial of service vulnerability in Mitsubishi Electric Corporation MELSEC iQ-R Series CPU Modules, published on 16 Nov 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2020-5666 in the wild and no public exploit code.\n\nAffected product: Mitsubishi Electric Corporation MELSEC iQ-R Series CPU Modules. 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-2020-5666/ (Markdown: https://insights.sbomify.com/CVE-2020-5666/index.md)","id":"CVE-2020-5666","markdown":"https://insights.sbomify.com/CVE-2020-5666/index.md","name":"CVE-2020-5666","record":{"aliases":["GHSA-5527-cm29-m2f3"],"analysis":{"component_type":"ics_ot","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Mitsubishi PLC","requires_auth":"none","summary":"Remote attackers can cause denial of service in Mitsubishi MELSEC iQ-R CPU modules via crafted HTTP packets, disrupting industrial control operations.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"jpcert","cpe":[{"product":"melsec_iq-r00_firmware","vendor":"mitsubishielectric"},{"product":"melsec_iq-r01_firmware","vendor":"mitsubishielectric"},{"product":"melsec_iq-r02_firmware","vendor":"mitsubishielectric"},{"product":"melsec_iq-r04_firmware","vendor":"mitsubishielectric"},{"product":"melsec_iq-r08_firmware","vendor":"mitsubishielectric"},{"product":"melsec_iq-r120_firmware","vendor":"mitsubishielectric"},{"product":"melsec_iq-r16_firmware","vendor":"mitsubishielectric"},{"product":"melsec_iq-r32_firmware","vendor":"mitsubishielectric"}],"cvss":{"score":7.5,"severity":"high","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-400","name":"Uncontrolled Resource Consumption"}],"description":"Uncontrolled resource consumption vulnerability in MELSEC iQ-R Series CPU Modules (R00/01/02CPU Firmware versions from '05' to '19' and R04/08/16/32/120(EN)CPU Firmware versions from '35' to '51') allows a remote attacker to cause an error in a CPU unit via a specially crafted HTTP packet, which may lead to a denial-of-service (DoS) condition in execution of the program and its communication.","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-R Series CPU Modules","id":"CVE-2020-5666","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":"Hardcoded credentials in Studyplus App","id":"CVE-2020-5667"},"packages":[],"prev":{"headline":"Denial of service in MELSEC iQ-F series FX5U(C) CPU unit","id":"CVE-2020-5665"},"products":["MELSEC iQ-R Series CPU Modules"],"published":"2020-11-16","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":"CWE Terms of Use","name":"CWE (MITRE)"},{"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":"Remote attackers can cause denial of service in Mitsubishi MELSEC iQ-R CPU modules via crafted HTTP packets, disrupting industrial control operations.","url":"https://insights.sbomify.com/CVE-2020-5666/"}