{"answers":{"affected":"It affects 10 products.","exploited":"There is no known exploitation of CVE-2020-7536 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2020-7536 yet. Limit exposure of the affected software until one is available.","what":"CVE-2020-7536 is a high-severity denial of service vulnerability 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), 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-2020-7536 and fix it if it is affected.\n\nWhat it is: CVE-2020-7536 is a high-severity denial of service vulnerability 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), 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-2020-7536 in the wild and no public exploit code.\n\nAffected product: 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). 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-2020-7536/ (Markdown: https://insights.sbomify.com/CVE-2020-7536/index.md)","id":"CVE-2020-7536","markdown":"https://insights.sbomify.com/CVE-2020-7536/index.md","name":"CVE-2020-7536","record":{"aliases":["GHSA-7f68-748r-v7xr"],"analysis":{"component_type":"ics_ot","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Modicon M340 PLC","requires_auth":"none","summary":"Attackers can render Modicon M340 devices unreachable by modifying network parameters via SNMP, causing a denial of service.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"schneider","cpe":[{"product":"bmxnoe0100_firmware","vendor":"schneider-electric"},{"product":"bmxnoe0110_firmware","vendor":"schneider-electric"},{"product":"bmxnor0200h_firmware","vendor":"schneider-electric"},{"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"}],"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 M340 CPUs (BMXP34* versions prior to V3.30) Modicon M340 Communication Ethernet modules (BMXNOE0100 (H) versions prior to V3.4 BMXNOE0110 (H) versions prior to V6.6 BMXNOR0200H all versions), that could cause the device to be unreachable when modifying network parameters over SNMP.","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 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","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2020"},"n_packages":0,"n_references":2,"next":{"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"},"packages":[],"prev":{"headline":"Path traversal in Web Server on Modicon M340, Legacy Offers Modicon Quantum and Modicon Premium and associated Communication Modules (see security notification for affected versions)","id":"CVE-2020-7535"},"products":["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)"],"published":"2020-12-11","related":[{"cvss_score":6.5,"headline":"Information disclosure in Modicon M340","id":"CVE-2024-5056","kev_date_added":null,"published":"2024-06-12"}],"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":"Attackers can render Modicon M340 devices unreachable by modifying network parameters via SNMP, causing a denial of service.","url":"https://insights.sbomify.com/CVE-2020-7536/"}