{"answers":{"affected":"It affects 12 products.","exploited":"There is no known exploitation of CVE-2019-6820 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2019-6820 yet. Limit exposure of the affected software until one is available.","what":"CVE-2019-6820 is a high-severity missing authorization vulnerability in Modicon and PacDrive Controller, All versions of: Modicon M100, Modicon M200, Modicon M221, ATV IMC drive controller, Modicon M241, Modicon M251, Modicon M258, Modicon LMC058, Modicon LMC078, PacDrive Eco ,PacDrive Pro, PacDrive Pro2, published on 22 May 2019. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2019-6820 and fix it if it is affected.\n\nWhat it is: CVE-2019-6820 is a high-severity missing authorization vulnerability in Modicon and PacDrive Controller, All versions of: Modicon M100, Modicon M200, Modicon M221, ATV IMC drive controller, Modicon M241, Modicon M251, Modicon M258, Modicon LMC058, Modicon LMC078, PacDrive Eco ,PacDrive Pro, PacDrive Pro2, published on 22 May 2019. 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-2019-6820 in the wild and no public exploit code.\n\nAffected product: Modicon and PacDrive Controller, All versions of: Modicon M100, Modicon M200, Modicon M221, ATV IMC drive controller, Modicon M241, Modicon M251, Modicon M258, Modicon LMC058, Modicon LMC078, PacDrive Eco ,PacDrive Pro, PacDrive Pro2. 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-2019-6820/ (Markdown: https://insights.sbomify.com/CVE-2019-6820/index.md)","id":"CVE-2019-6820","markdown":"https://insights.sbomify.com/CVE-2019-6820/index.md","name":"CVE-2019-6820","record":{"aliases":["GHSA-phf4-8g7h-893g"],"analysis":{"component_type":"ics_ot","fix_type":"patch","impacts":["data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"Modicon PLC","requires_auth":"none","summary":"Attackers can modify device IP configuration via specific Ethernet frames due to missing authentication for critical functions in Modicon and PacDrive controllers.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"schneider","cpe":[{"product":"atv_imc_drive_controller_firmware","vendor":"schneider-electric"},{"product":"modicon_lmc058_firmware","vendor":"schneider-electric"},{"product":"modicon_lmc078_firmware","vendor":"schneider-electric"},{"product":"modicon_m100_firmware","vendor":"schneider-electric"},{"product":"modicon_m200_firmware","vendor":"schneider-electric"},{"product":"modicon_m221_firmware","vendor":"schneider-electric"},{"product":"modicon_m241_firmware","vendor":"schneider-electric"},{"product":"modicon_m251_firmware","vendor":"schneider-electric"},{"product":"modicon_m258_firmware","vendor":"schneider-electric"},{"product":"pacdrive_eco_firmware","vendor":"schneider-electric"},{"product":"pacdrive_pro2_firmware","vendor":"schneider-electric"},{"product":"pacdrive_pro_firmware","vendor":"schneider-electric"}],"cvss":{"score":8.2,"severity":"high","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H","version":"3.1"},"cwes":[{"id":"CWE-306","name":"Missing Authentication for Critical Functionality"}],"description":"A CWE-306: Missing Authentication for Critical Function vulnerability exists which could cause a modification of device IP configuration (IP address, network mask and gateway IP address) when a specific Ethernet frame is received in all versions of: Modicon M100, Modicon M200, Modicon M221, ATV IMC drive controller, Modicon M241, Modicon M251, Modicon M258, Modicon LMC058, Modicon LMC078, PacDrive Eco ,PacDrive Pro, PacDrive Pro2","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":"Missing authorization in Modicon and PacDrive Controller, All versions of: Modicon M100, Modicon M200, Modicon M221, ATV IMC drive controller, Modicon M241, Modicon M251, Modicon M258, Modicon LMC058, Modicon LMC078, PacDrive Eco ,PacDrive Pro, PacDrive Pro2","id":"CVE-2019-6820","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"missing_authorization","year":"2019"},"n_packages":0,"n_references":1,"next":{"headline":"Weak cryptography in Modicon Controllers, Modicon M580 firmware versions prior to V2.30, and all firmware versions of Modicon M340, Modicon Premium, Modicon Quantum","id":"CVE-2019-6821"},"packages":[],"prev":{"headline":"Denial of service in Modicon Controllers, Modicon M340 - firmware versions prior to V3.01 Modicon M580 - firmware versions prior to V2.80 All firmware versions of Modicon Quantum and Modicon Premium","id":"CVE-2019-6819"},"products":["Modicon and PacDrive Controller, All versions of: Modicon M100, Modicon M200, Modicon M221, ATV IMC drive controller, Modicon M241, Modicon M251, Modicon M258, Modicon LMC058, Modicon LMC078, PacDrive Eco ,PacDrive Pro, PacDrive Pro2"],"published":"2019-05-22","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":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-05-28","vendors":["n/a"]},"summary":"Attackers can modify device IP configuration via specific Ethernet frames due to missing authentication for critical functions in Modicon and PacDrive controllers.","url":"https://insights.sbomify.com/CVE-2019-6820/"}