{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-47709 exists.","fix":"No fix has been published for CVE-2021-47709 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-47709 is a high-severity missing authorization vulnerability in COMMAX Co., Ltd. Smart Home Ruvie CCTV Bridge DVR Service, published on 9 Dec 2025. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-47709 and fix it if it is affected.\n\nWhat it is: CVE-2021-47709 is a high-severity missing authorization vulnerability in COMMAX Co., Ltd. Smart Home Ruvie CCTV Bridge DVR Service, published on 9 Dec 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-47709 exists.\n\nAffected product: COMMAX Co., Ltd. Smart Home Ruvie CCTV Bridge DVR Service. 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-2021-47709/ (Markdown: https://insights.sbomify.com/CVE-2021-47709/index.md)","id":"CVE-2021-47709","markdown":"https://insights.sbomify.com/CVE-2021-47709/index.md","name":"CVE-2021-47709","record":{"aliases":["GHSA-5gpj-jhmx-464r"],"analysis":{"component_type":"iot_embedded","fix_type":"no_fix_stated","impacts":["data_modify","denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Smart Home DVR Bridge","requires_auth":"none","summary":"Unauthenticated attackers can modify configuration and cause denial-of-service in COMMAX Smart Home Ruvie CCTV Bridge DVR Service via the setconf endpoint.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":8.7,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-306","name":"Missing Authentication for Critical Functionality"}],"description":"COMMAX Smart Home System allows an unauthenticated attacker to change configuration and cause denial-of-service through the setconf endpoint. Attackers can trigger a denial-of-service scenario by sending a malformed request to the setconf endpoint.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":null,"headline":"COMMAX Smart Home Ruvie CCTV Bridge DVR Service Config Write / DoS","id":"CVE-2021-47709","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"missing_authorization","year":"2021"},"n_packages":0,"n_references":4,"next":{"headline":"COMMAX Smart Home Ruvie CCTV Bridge DVR Service RTSP Credentials Disclosure","id":"CVE-2021-47710"},"packages":[],"prev":{"headline":"COMMAX Smart Home IoT Control System SQL Injection Authentication Bypass","id":"CVE-2021-47708"},"products":["Smart Home Ruvie CCTV Bridge DVR Service"],"published":"2025-12-09","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-04-07","vendors":["COMMAX Co., Ltd."]},"summary":"Unauthenticated attackers can modify configuration and cause denial-of-service in COMMAX Smart Home Ruvie CCTV Bridge DVR Service via the setconf endpoint.","url":"https://insights.sbomify.com/CVE-2021-47709/"}