{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2019-16871 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2019-16871 yet. Limit exposure of the affected software until one is available.","what":"CVE-2019-16871 is a critical authentication bypass vulnerability in n/a, published on 19 Dec 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-2019-16871 and fix it if it is affected.\n\nWhat it is: CVE-2019-16871 is a critical authentication bypass vulnerability in n/a, published on 19 Dec 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-2019-16871 in the wild and no public exploit code.\n\nAffected product: n/a. 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-2019-16871/ (Markdown: https://insights.sbomify.com/CVE-2019-16871/index.md)","id":"CVE-2019-16871","markdown":"https://insights.sbomify.com/CVE-2019-16871/index.md","name":"CVE-2019-16871","record":{"aliases":["GHSA-2q68-c93j-vxw8"],"analysis":{"component_type":"ics_ot","fix_type":"patch","impacts":["code_execution","privilege_escalation"],"network_reachable":"yes","non_default_config":false,"product_category":"Beckhoff PLC","requires_auth":"none","summary":"Attackers can achieve remote code execution with SYSTEM privileges on Beckhoff PLCs and engineering stations via the ADS protocol.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"twincat","vendor":"beckhoff"}],"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-290","name":"Authentication Bypass by Spoofing"}],"description":"Beckhoff Embedded Windows PLCs through 3.1.4024.0, and Beckhoff Twincat on Windows Engineering stations, allow an attacker to achieve Remote Code Execution (as SYSTEM) via the Beckhoff ADS protocol.","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 n/a","id":"CVE-2019-16871","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"auth_bypass","year":"2019"},"n_packages":0,"n_references":2,"next":{"headline":"Missing authorization in n/a","id":"CVE-2019-16872"},"packages":[],"prev":{"headline":"HTTP Request Smuggling in Netty","id":"CVE-2019-16869"},"products":["n/a"],"published":"2019-12-19","related":[{"cvss_score":9.1,"headline":"Weak cryptography in Beckhoff TwinCAT","id":"CVE-2017-16726","kev_date_added":null,"published":"2018-06-27"},{"cvss_score":7.8,"headline":"Privilege escalation in Beckhoff TwinCAT PLC products","id":"CVE-2018-7502","kev_date_added":null,"published":"2018-03-23"},{"cvss_score":7.5,"headline":"Beckhoff TwinCAT Profinet Driver Divide-by-Zero Denial of Service","id":"CVE-2019-5637","kev_date_added":null,"published":"2019-11-21"},{"cvss_score":5.9,"headline":"Weak cryptography in Beckhoff TwinCAT","id":"CVE-2017-16718","kev_date_added":null,"published":"2018-06-27"},{"cvss_score":5.3,"headline":"Beckhoff: Etherleak in TwinCAT RT network driver","id":"CVE-2020-12494","kev_date_added":null,"published":"2020-06-16"},{"cvss_score":5.3,"headline":"Beckhoff TwinCAT Discovery Service Denial of Service","id":"CVE-2019-5636","kev_date_added":null,"published":"2019-11-21"}],"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":"2024-08-05","vendors":["n/a"]},"summary":"Attackers can achieve remote code execution with SYSTEM privileges on Beckhoff PLCs and engineering stations via the ADS protocol.","url":"https://insights.sbomify.com/CVE-2019-16871/"}