{"answers":{"affected":"It affects 23 products.","exploited":"There is no known exploitation of CVE-2019-6855 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2019-6855 yet. Limit exposure of the affected software until one is available.","what":"CVE-2019-6855 is a high-severity authentication bypass vulnerability in EcoStruxure Control Expert (all versions prior to 14.1 Hot Fix), Unity Pro (all versions), Modicon M340 (all versions prior to V3.20) , and Modicon M580 (all versions prior to V3.10), published on 6 Jan 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-2019-6855 and fix it if it is affected.\n\nWhat it is: CVE-2019-6855 is a high-severity authentication bypass vulnerability in EcoStruxure Control Expert (all versions prior to 14.1 Hot Fix), Unity Pro (all versions), Modicon M340 (all versions prior to V3.20) , and Modicon M580 (all versions prior to V3.10), published on 6 Jan 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-2019-6855 in the wild and no public exploit code.\n\nAffected product: EcoStruxure Control Expert (all versions prior to 14.1 Hot Fix), Unity Pro (all versions), Modicon M340 (all versions prior to V3.20) , and Modicon M580 (all versions prior to V3.10). 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-2019-6855/ (Markdown: https://insights.sbomify.com/CVE-2019-6855/index.md)","id":"CVE-2019-6855","markdown":"https://insights.sbomify.com/CVE-2019-6855/index.md","name":"CVE-2019-6855","record":{"aliases":["GHSA-f79p-hq3g-prjw"],"analysis":{"component_type":"ics_ot","fix_type":"upgrade","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"PLC programming software","requires_auth":"none","summary":"Attackers can bypass authentication between EcoStruxure Control Expert and Modicon controllers, allowing unauthorized access to industrial control systems.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"schneider","cpe":[{"product":"ecostruxure_control_expert","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_bmxp342020_firmware","vendor":"schneider-electric"},{"product":"modicon_m340_bmxp3420302_firmware","vendor":"schneider-electric"},{"product":"modicon_m580_bmeh582040_firmware","vendor":"schneider-electric"},{"product":"modicon_m580_bmeh584040_firmware","vendor":"schneider-electric"},{"product":"modicon_m580_bmeh584040s_firmware","vendor":"schneider-electric"},{"product":"modicon_m580_bmeh586040_firmware","vendor":"schneider-electric"},{"product":"modicon_m580_bmeh586040s_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_bmep582040s_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_bmep584040s_firmware","vendor":"schneider-electric"},{"product":"modicon_m580_bmep585040_firmware","vendor":"schneider-electric"},{"product":"modicon_m580_bmep586040_firmware","vendor":"schneider-electric"},{"product":"unity_pro","vendor":"schneider-electric"}],"cvss":{"score":7.3,"severity":"high","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","version":"3.1"},"cwes":[{"id":"CWE-863","name":"Incorrect Authorization"}],"description":"Incorrect Authorization vulnerability exists in EcoStruxure Control Expert (all versions prior to 14.1 Hot Fix), Unity Pro (all versions), Modicon M340 (all versions prior to V3.20) , and Modicon M580 (all versions prior to V3.10), which could cause a bypass of the authentication process between EcoStruxure Control Expert and the M340 and M580 controllers.","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":"Auth bypass in EcoStruxure Control Expert (all versions prior to 14.1 Hot Fix), Unity Pro (all versions), Modicon M340 (all versions prior to V3.20) , and Modicon M580 (all versions prior to V3.10)","id":"CVE-2019-6855","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"auth_bypass","year":"2019"},"n_packages":0,"n_references":1,"next":{"headline":"Denial of service in Modicon M580, Modicon M340, Modicon Quantum, Modicon Premium (see security notification for specific versions)","id":"CVE-2019-6856"},"packages":[],"prev":{"headline":"Missing authorization in EcoStruxure Geo SCADA Expert (ClearSCADA) with initial releases before 1 January 2019 (see notification for more details)","id":"CVE-2019-6854"},"products":["EcoStruxure Control Expert (all versions prior to 14.1 Hot Fix), Unity Pro (all versions), Modicon M340 (all versions prior to V3.20) , and Modicon M580 (all versions prior to V3.10)"],"published":"2020-01-06","related":[{"cvss_score":9.8,"headline":"Auth bypass in EcoStruxure Control Expert","id":"CVE-2022-37300","kev_date_added":null,"published":"2022-09-12"},{"cvss_score":9.8,"headline":"Auth bypass in PLC Simulator on EcoStruxureª Control Expert (now Unity Pro) (all versions)","id":"CVE-2020-28212","kev_date_added":null,"published":"2020-11-19"},{"cvss_score":9.8,"headline":"Code injection in EcoStruxure Control Expert (all versions prior to 14.1 Hot Fix), Unity Pro (all versions), Modicon M340 (all versions prior to V3.20), Modicon M580 (all versions prior to V3.10)","id":"CVE-2020-7475","kev_date_added":null,"published":"2020-03-23"},{"cvss_score":8.8,"headline":"Other in EcoStruxure Control Expert","id":"CVE-2023-27976","kev_date_added":null,"published":"2023-04-18"},{"cvss_score":8.8,"headline":"Code injection in PLC Simulator on EcoStruxureª Control Expert (now Unity Pro) (all versions)","id":"CVE-2020-28213","kev_date_added":null,"published":"2020-11-19"},{"cvss_score":8.6,"headline":"Memory corruption in EcoStruxure™ Control Expert (all versions) and Unity Pro (former name of EcoStruxure™ Control Expert) (all versions)","id":"CVE-2020-7560","kev_date_added":null,"published":"2020-12-11"},{"cvss_score":8.1,"headline":"Other in EcoStruxure Control Expert","id":"CVE-2023-6408","kev_date_added":null,"published":"2024-02-14"}],"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 bypass authentication between EcoStruxure Control Expert and Modicon controllers, allowing unauthorized access to industrial control systems.","url":"https://insights.sbomify.com/CVE-2019-6855/"}