{"answers":{"affected":"It affects 19 products.","exploited":"There is no known exploitation of CVE-2020-7537 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2020-7537 yet. Limit exposure of the affected software until one is available.","what":"CVE-2020-7537 is a high-severity denial of service vulnerability in Modicon M580, Modicon M340, Legacy Controllers Modicon Quantum \u0026 Modicon Premium (see security notifications for affected versions), published on 11 Dec 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-2020-7537 and fix it if it is affected.\n\nWhat it is: CVE-2020-7537 is a high-severity denial of service vulnerability in Modicon M580, Modicon M340, Legacy Controllers Modicon Quantum \u0026 Modicon Premium (see security notifications for affected versions), published on 11 Dec 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-2020-7537 in the wild and no public exploit code.\n\nAffected product: Modicon M580, Modicon M340, Legacy Controllers Modicon Quantum \u0026 Modicon Premium (see security notifications for affected versions). 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-2020-7537/ (Markdown: https://insights.sbomify.com/CVE-2020-7537/index.md)","id":"CVE-2020-7537","markdown":"https://insights.sbomify.com/CVE-2020-7537/index.md","name":"CVE-2020-7537","record":{"aliases":["GHSA-9vj3-52fm-gw3x"],"analysis":{"component_type":"ics_ot","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Modicon PLC","requires_auth":"none","summary":"A specially crafted Modbus request can cause a denial of service in Schneider Electric Modicon controllers, requiring vendor patches.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"schneider","cpe":[{"product":"modicon_m340_bmxp341000_firmware","vendor":"schneider-electric"},{"product":"modicon_m340_bmxp342000_firmware","vendor":"schneider-electric"},{"product":"modicon_m340_bmxp3420102_firmware","vendor":"schneider-electric"},{"product":"modicon_m340_bmxp3420102cl_firmware","vendor":"schneider-electric"},{"product":"modicon_m340_bmxp342020_firmware","vendor":"schneider-electric"},{"product":"modicon_m340_bmxp3420302_firmware","vendor":"schneider-electric"},{"product":"modicon_m340_bmxp3420302cl_firmware","vendor":"schneider-electric"},{"product":"modicon_m580_bmep581020_firmware","vendor":"schneider-electric"},{"product":"modicon_m580_bmep582020_firmware","vendor":"schneider-electric"},{"product":"modicon_m580_bmep582040_firmware","vendor":"schneider-electric"},{"product":"modicon_m580_bmep583020_firmware","vendor":"schneider-electric"},{"product":"modicon_m580_bmep583040_firmware","vendor":"schneider-electric"},{"product":"modicon_m580_bmep584020_firmware","vendor":"schneider-electric"},{"product":"modicon_m580_bmep584040_firmware","vendor":"schneider-electric"},{"product":"modicon_m580_bmep585040_firmware","vendor":"schneider-electric"},{"product":"modicon_m580_bmep586040_firmware","vendor":"schneider-electric"},{"product":"tsxp574634_firmware","vendor":"schneider-electric"},{"product":"tsxp575634_firmware","vendor":"schneider-electric"},{"product":"tsxp576634_firmware","vendor":"schneider-electric"}],"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-754","name":"Improper Check for Unusual or Exceptional Conditions"}],"description":"A CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability exists in Modicon M580, Modicon M340, Legacy Controllers Modicon Quantum \u0026 Modicon Premium (see security notifications for affected versions), that could cause denial of service when a specially crafted Read Physical Memory request over Modbus is sent to the controller.","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 Modicon M580, Modicon M340, Legacy Controllers Modicon Quantum \u0026 Modicon Premium (see security notifications for affected versions)","id":"CVE-2020-7537","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2020"},"n_packages":0,"n_references":1,"next":{"headline":"Denial of service in PLC Simulator on EcoStruxureª Control Expert (now Unity Pro) (all versions)","id":"CVE-2020-7538"},"packages":[],"prev":{"headline":"Denial of service in Modicon M340 CPUs (BMXP34* versions prior to V3.30) and Modicon M340 Communication Ethernet modules (BMXNOE0100 (H) versions prior to V3.4, BMXNOE0110 (H) versions prior to V6.6, and BMXNOR0200H all versions)","id":"CVE-2020-7536"},"products":["Modicon M580, Modicon M340, Legacy Controllers Modicon Quantum \u0026 Modicon Premium (see security notifications for affected versions)"],"published":"2020-12-11","related":[{"cvss_score":7.5,"headline":"Information disclosure in Legacy Modicon Quantum","id":"CVE-2021-22786","kev_date_added":null,"published":"2023-02-01"},{"cvss_score":7.5,"headline":"Denial of service in Modicon M340 CPUs: BMXP34 (All Versions)","id":"CVE-2022-22724","kev_date_added":null,"published":"2022-02-04"},{"cvss_score":7.5,"headline":"Denial of service in Modicon M580, Modicon M340, Legacy Controllers Modicon Quantum \u0026 Modicon Premium (see security notifications for affected versions)","id":"CVE-2020-7543","kev_date_added":null,"published":"2020-12-11"}],"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":["n/a"]},"summary":"A specially crafted Modbus request can cause a denial of service in Schneider Electric Modicon controllers, requiring vendor patches.","url":"https://insights.sbomify.com/CVE-2020-7537/"}