{"answers":{"affected":"It affects 12 products.","exploited":"There is no known exploitation of CVE-2021-34578 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-34578 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-34578 is a critical authentication bypass vulnerability in WAGO PLC, published on 31 Aug 2021. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-34578 and fix it if it is affected.\n\nWhat it is: CVE-2021-34578 is a critical authentication bypass vulnerability in WAGO PLC, published on 31 Aug 2021. 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-2021-34578 in the wild and no public exploit code.\n\nAffected product: WAGO PLC. 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-2021-34578/ (Markdown: https://insights.sbomify.com/CVE-2021-34578/index.md)","id":"CVE-2021-34578","markdown":"https://insights.sbomify.com/CVE-2021-34578/index.md","name":"CVE-2021-34578","record":{"aliases":["GHSA-m68m-r5xj-h4vj"],"analysis":{"component_type":"ics_ot","fix_type":"upgrade","impacts":["data_read","data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"WAGO PLC","requires_auth":"none","summary":"Attackers can bypass authentication to read and modify settings on WAGO PLCs via the web-based management interface.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"CERTVDE","cpe":[{"product":"750-362_firmware","vendor":"wago"},{"product":"750-363_firmware","vendor":"wago"},{"product":"750-823_firmware","vendor":"wago"},{"product":"750-832\\/000-002_firmware","vendor":"wago"},{"product":"750-832_firmware","vendor":"wago"},{"product":"750-862_firmware","vendor":"wago"},{"product":"750-890\\/025-000_firmware","vendor":"wago"},{"product":"750-890\\/025-001_firmware","vendor":"wago"},{"product":"750-890\\/025-002_firmware","vendor":"wago"},{"product":"750-890\\/040-000_firmware","vendor":"wago"},{"product":"750-891_firmware","vendor":"wago"},{"product":"750-893_firmware","vendor":"wago"}],"cvss":{"score":9.8,"severity":"critical","source":"cna","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":"This vulnerability allows an attacker who has access to the WBM to read and write settings-parameters of the device by sending specifically constructed requests without authentication on multiple WAGO PLCs in firmware versions up to FW07.","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":"WAGO: Authentication Vulnerability in Web-Based Management","id":"CVE-2021-34578","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"auth_bypass","year":"2021"},"n_packages":0,"n_references":1,"next":{"headline":"PHOENIX CONTACT: FL MGUARD DM version 1.12.0 and 1.13.0 Improper Privilege Management","id":"CVE-2021-34579"},"packages":[],"prev":{"headline":"Hardcoded credentials in Kaden PICOFLUX AiR","id":"CVE-2021-34577"},"products":["PLC"],"published":"2021-08-31","related":[{"cvss_score":9.1,"headline":"WAGO: Authentication Bypass Vulnerability in WAGO 750-36X and WAGO 750-8XX Versions \u003c= FW03","id":"CVE-2020-12506","kev_date_added":null,"published":"2020-09-30"}],"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":"2024-09-16","vendors":["WAGO"]},"summary":"Attackers can bypass authentication to read and modify settings on WAGO PLCs via the web-based management interface.","url":"https://insights.sbomify.com/CVE-2021-34578/"}