{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2020-5544 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2020-5544 yet. Limit exposure of the affected software until one is available.","what":"CVE-2020-5544 is a critical vulnerability in Mitsubishi Electric MELQIC IU1 series, published on 16 Mar 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-2020-5544 and fix it if it is affected.\n\nWhat it is: CVE-2020-5544 is a critical vulnerability in Mitsubishi Electric MELQIC IU1 series, published on 16 Mar 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-2020-5544 in the wild and no public exploit code.\n\nAffected product: Mitsubishi Electric MELQIC IU1 series. 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-2020-5544/ (Markdown: https://insights.sbomify.com/CVE-2020-5544/index.md)","id":"CVE-2020-5544","markdown":"https://insights.sbomify.com/CVE-2020-5544/index.md","name":"CVE-2020-5544","record":{"aliases":["GHSA-rg84-vv52-p8m7"],"analysis":{"component_type":"ics_ot","fix_type":"patch","impacts":["denial_of_service","code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Mitsubishi Electric MELQIC","requires_auth":"none","summary":"Remote attackers can cause denial of service or execute malware on Mitsubishi Electric MELQIC devices via crafted packets exploiting a null pointer dereference.","user_interaction":"not_required","vuln_class":"null_dereference"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"jpcert","cpe":[{"product":"iu1-1m20-d_firmware","vendor":"mitsubishielectric"}],"cvss":{"score":9.8,"severity":"critical","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-476","name":"NULL Pointer Dereference"}],"description":"Null Pointer Dereference vulnerability in TCP function included in the firmware of Mitsubishi Electric MELQIC IU1 series IU1-1M20-D firmware version 1.0.7 and earlier allows remote attackers to stop the network functions or execute malware via a specially crafted 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":"Null dereference in Mitsubishi Electric MELQIC IU1 series","id":"CVE-2020-5544","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"null_dereference","year":"2020"},"n_packages":0,"n_references":2,"next":{"headline":"Auth bypass in Mitsubishi Electric MELQIC IU1 series","id":"CVE-2020-5545"},"packages":[],"prev":{"headline":"Other in Mitsubishi Electric MELQIC IU1 series","id":"CVE-2020-5543"},"products":["Mitsubishi Electric MELQIC IU1 series"],"published":"2020-03-16","related":[{"cvss_score":9.8,"headline":"Memory corruption in Mitsubishi Electric MELQIC IU1 series","id":"CVE-2020-5542","kev_date_added":null,"published":"2020-03-16"},{"cvss_score":9.8,"headline":"Other in Mitsubishi Electric MELQIC IU1 series","id":"CVE-2020-5543","kev_date_added":null,"published":"2020-03-16"},{"cvss_score":9.8,"headline":"Auth bypass in Mitsubishi Electric MELQIC IU1 series","id":"CVE-2020-5545","kev_date_added":null,"published":"2020-03-16"},{"cvss_score":9.8,"headline":"Denial of service in Mitsubishi Electric MELQIC IU1 series","id":"CVE-2020-5547","kev_date_added":null,"published":"2020-03-16"},{"cvss_score":8.8,"headline":"Command injection in Mitsubishi Electric MELQIC IU1 series","id":"CVE-2020-5546","kev_date_added":null,"published":"2020-03-16"}],"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 or execute malware on Mitsubishi Electric MELQIC devices via crafted packets exploiting a null pointer dereference.","url":"https://insights.sbomify.com/CVE-2020-5544/"}