{"answers":{"affected":"It affects 16 products.","exploited":"There is no known exploitation of CVE-2020-7533 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2020-7533 yet. Limit exposure of the affected software until one is available.","what":"CVE-2020-7533 is a critical authentication bypass vulnerability in Web Server on Modicon M340, Modicon Quantum and Modicon Premium Legacy offers and their Communication Modules (see security notification for version information), published on 1 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-2020-7533 and fix it if it is affected.\n\nWhat it is: CVE-2020-7533 is a critical authentication bypass vulnerability in Web Server on Modicon M340, Modicon Quantum and Modicon Premium Legacy offers and their Communication Modules (see security notification for version information), published on 1 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-2020-7533 in the wild and no public exploit code.\n\nAffected product: Web Server on Modicon M340, Modicon Quantum and Modicon Premium Legacy offers and their Communication Modules (see security notification for version information). 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-2020-7533/ (Markdown: https://insights.sbomify.com/CVE-2020-7533/index.md)","id":"CVE-2020-7533","markdown":"https://insights.sbomify.com/CVE-2020-7533/index.md","name":"CVE-2020-7533","record":{"aliases":["GHSA-4wm4-5vmp-66g7"],"analysis":{"component_type":"ics_ot","fix_type":"patch","impacts":["code_execution","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Modicon PLC Web Server","requires_auth":"none","summary":"Unauthenticated attackers can execute commands on Modicon PLC web servers via crafted HTTP requests, requiring immediate patching for industrial control systems.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"schneider","cpe":[{"product":"140cpu65260_firmware","vendor":"schneider-electric"},{"product":"140noc77101_firmware","vendor":"schneider-electric"},{"product":"140noc78000_firmware","vendor":"schneider-electric"},{"product":"140noe77111_firmware","vendor":"schneider-electric"},{"product":"bmxnoc0401_firmware","vendor":"schneider-electric"},{"product":"bmxnoe0100_firmware","vendor":"schneider-electric"},{"product":"bmxnoe0110_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_bmxp3420302_firmware","vendor":"schneider-electric"},{"product":"tsxety4103_firmware","vendor":"schneider-electric"},{"product":"tsxety5103_firmware","vendor":"schneider-electric"},{"product":"tsxp574634_firmware","vendor":"schneider-electric"},{"product":"tsxp575634_firmware","vendor":"schneider-electric"},{"product":"tsxp576634_firmware","vendor":"schneider-electric"}],"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-287","name":"Improper Authentication"}],"description":"CWE-287: Improper Authentication vulnerability exists which could cause the execution of\ncommands on the webserver without authentication when sending specially crafted HTTP\nrequests.","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 Web Server on Modicon M340, Modicon Quantum and Modicon Premium Legacy offers and their Communication Modules (see security notification for version information)","id":"CVE-2020-7533","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"auth_bypass","year":"2020"},"n_packages":0,"n_references":1,"next":{"headline":"Cross-site request forgery in Modicon M340 CPUs: BMXP34 (All Versions), Modicon Quantum CPUs with integrated Ethernet (Copro): 140CPU65 (All Versions), Modicon Premium CPUs with integrated Ethernet (Copro): TSXP57 (All Versions), Modicon M340 ethernet modules: (BMXNOC0401, BMXNOE01, BMXNOR0200H) (All Versions), Modicon Quantum and Premium factory cast communication modules: (140NOE77111, 140NOC78*00, TSXETY5103, TSXETY4103)","id":"CVE-2020-7534"},"packages":[],"prev":{"headline":"Deserialization in SCADAPack x70 Security Administrator V1.2.0 and prior.","id":"CVE-2020-7532"},"products":["Web Server on Modicon M340, Modicon Quantum and Modicon Premium Legacy offers and their Communication Modules (see security notification for version information)"],"published":"2020-12-01","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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2025-06-10","vendors":["n/a"]},"summary":"Unauthenticated attackers can execute commands on Modicon PLC web servers via crafted HTTP requests, requiring immediate patching for industrial control systems.","url":"https://insights.sbomify.com/CVE-2020-7533/"}