{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-47707 exists.","fix":"No fix has been published for CVE-2021-47707 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-47707 is a critical vulnerability in COMMAX CVD-Axx DVR, 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-2021-47707 and fix it if it is affected.\n\nWhat it is: CVE-2021-47707 is a critical vulnerability in COMMAX CVD-Axx DVR, 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-2021-47707 exists.\n\nAffected product: COMMAX CVD-Axx DVR. 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-2021-47707/ (Markdown: https://insights.sbomify.com/CVE-2021-47707/index.md)","id":"CVE-2021-47707","markdown":"https://insights.sbomify.com/CVE-2021-47707/index.md","name":"CVE-2021-47707","record":{"aliases":["GHSA-q6gq-vxg6-9m9p"],"analysis":{"component_type":"iot_embedded","fix_type":"configuration_change","impacts":["data_read","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"DVR security system","requires_auth":"none","summary":"Attackers can access the web control panel and RTSP streams using weak default administrative credentials, compromising video surveillance data.","user_interaction":"not_required","vuln_class":"hardcoded_credentials"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":9.3,"severity":"critical","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-1392","name":"Use of Default Credentials"}],"description":"COMMAX CVD-Axx DVR 5.1.4 contains weak default administrative credentials that allow remote password attacks and disclose RTSP stream. Attackers can exploit this by sending a POST request with the 'passkey' parameter set to '1234', allowing them to access the web control panel.","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 CVD-Axx DVR Weak Default Credentials Stream Disclosure","id":"CVE-2021-47707","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"hardcoded_credentials","year":"2021"},"n_packages":0,"n_references":4,"next":{"headline":"COMMAX Smart Home IoT Control System SQL Injection Authentication Bypass","id":"CVE-2021-47708"},"packages":[],"prev":{"headline":"COMMAX Biometric Access Control System Authentication Bypass","id":"CVE-2021-47706"},"products":["COMMAX CVD-Axx DVR"],"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":"Attackers can access the web control panel and RTSP streams using weak default administrative credentials, compromising video surveillance data.","url":"https://insights.sbomify.com/CVE-2021-47707/"}