{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-33842 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-33842 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-33842 is a high-severity authentication bypass vulnerability in Circutor SGE-PLC1000, published on 9 Jun 2021. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-33842 and fix it if it is affected.\n\nWhat it is: CVE-2021-33842 is a high-severity authentication bypass vulnerability in Circutor SGE-PLC1000, published on 9 Jun 2021. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2021-33842 in the wild and no public exploit code.\n\nAffected product: Circutor SGE-PLC1000. 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-2021-33842/ (Markdown: https://insights.sbomify.com/CVE-2021-33842/index.md)","id":"CVE-2021-33842","markdown":"https://insights.sbomify.com/CVE-2021-33842/index.md","name":"CVE-2021-33842","record":{"aliases":["GHSA-vmhr-5qxj-xvcm"],"analysis":{"component_type":"ics_ot","fix_type":"no_fix_stated","impacts":["privilege_escalation","data_modify"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"PLC firmware","requires_auth":"none","summary":"An attacker on the local network can bypass authentication via the cookie parameter to perform operations as an authenticated user on Circutor SGE-PLC1000 devices.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"INCIBE","cpe":[{"product":"sge-plc1000_firmware","vendor":"circutor"}],"cvss":{"score":8.8,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-565","name":"Reliance on Cookies without Validation and Integrity Checking"}],"description":"Improper Authentication vulnerability in the cookie parameter of Circutor SGE-PLC1000 firmware version 0.9.2b allows an attacker to perform operations as an authenticated user. In order to exploit this vulnerability, the attacker must be within the network where the device affected is located.","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":"Circutor SGE-PLC1000 improper authentication","id":"CVE-2021-33842","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":"Fresenius Kabi Agilia Connect Infusion System files or directories accessible to external parties","id":"CVE-2021-33843"},"packages":[],"prev":{"headline":"Circutor SGE-PLC1000 OS command Injection","id":"CVE-2021-33841"},"products":["SGE-PLC1000"],"published":"2021-06-09","related":[{"cvss_score":10,"headline":"Stack-based buffer overflow vulnreability in Circutor SGE-PLC1000/SGE-PLC50","id":"CVE-2025-11778","kev_date_added":null,"published":"2025-12-02"},{"cvss_score":10,"headline":"Circutor SGE-PLC1000 OS command Injection","id":"CVE-2021-33841","kev_date_added":null,"published":"2021-06-09"},{"cvss_score":9.4,"headline":"Stack-based buffer overflow vulnreability in Circutor SGE-PLC1000/SGE-PLC50","id":"CVE-2025-11779","kev_date_added":null,"published":"2025-12-02"},{"cvss_score":8.7,"headline":"Stack-based buffer overflow vulnreability in Circutor SGE-PLC1000/SGE-PLC50","id":"CVE-2025-11780","kev_date_added":null,"published":"2025-12-02"},{"cvss_score":8.6,"headline":"Use of hardcoded cryptographic keys in Circutor SGE-PLC1000/SGE-PLC50","id":"CVE-2025-11781","kev_date_added":null,"published":"2025-12-02"},{"cvss_score":8.5,"headline":"Stack-based buffer overflow vulnerability in Circutor SGE-PLC1000/SGE-PLC50","id":"CVE-2025-11782","kev_date_added":null,"published":"2025-12-02"}],"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":["Circutor"]},"summary":"An attacker on the local network can bypass authentication via the cookie parameter to perform operations as an authenticated user on Circutor SGE-PLC1000 devices.","url":"https://insights.sbomify.com/CVE-2021-33842/"}