{"api_version":"1","generated_at":"2026-07-23T20:40:09+00:00","cve":"CVE-2021-45039","urls":{"html":"https://cve.report/CVE-2021-45039","api":"https://cve.report/api/cve/CVE-2021-45039.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2021-45039","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-45039"},"summary":{"title":"CVE-2021-45039","description":"Multiple models of the Uniview IP Camera (e.g., IPC_G6103 B6103.16.10.B25.201218, IPC_G61, IPC21, IPC23, IPC32, IPC36, IPC62, and IPC_HCMN) offer an undocumented UDP service on port 7788 that allows a remote unauthenticated attacker to overflow an internal buffer and achieve code execution. By using this buffer overflow, a remote attacker can start the telnetd service. This service has a hardcoded default username and password (root/123456). Although it has a restrictive shell, this can be easily bypassed via the built-in ECHO shell command.","state":"PUBLIC","assigner":"cve@mitre.org","published_at":"2023-05-31 20:15:00","updated_at":"2023-06-14 15:29:00"},"problem_types":["CWE-120"],"metrics":[],"references":[{"url":"https://www.uniview.com/About_Us/Security/Notice/202112/920471_140493_0.htm","name":"https://www.uniview.com/About_Us/Security/Notice/202112/920471_140493_0.htm","refsource":"MISC","tags":[],"title":"Security Notice - Uniview - Leader of AIoT Solution","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://ssd-disclosure.com/ssd-advisory--uniview-preauth-rce/","name":"https://ssd-disclosure.com/ssd-advisory--uniview-preauth-rce/","refsource":"MISC","tags":[],"title":"","mime":"","httpstatus":"-1","archivestatus":"404"},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-45039","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-45039","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2021","cve_id":"45039","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"uniview","cpe5":"camera_firmware","cpe6":"-","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"CVE_data_meta":{"ASSIGNER":"cve@mitre.org","ID":"CVE-2021-45039","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"n/a","version":{"version_data":[{"version_value":"n/a"}]}}]},"vendor_name":"n/a"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"Multiple models of the Uniview IP Camera (e.g., IPC_G6103 B6103.16.10.B25.201218, IPC_G61, IPC21, IPC23, IPC32, IPC36, IPC62, and IPC_HCMN) offer an undocumented UDP service on port 7788 that allows a remote unauthenticated attacker to overflow an internal buffer and achieve code execution. By using this buffer overflow, a remote attacker can start the telnetd service. This service has a hardcoded default username and password (root/123456). Although it has a restrictive shell, this can be easily bypassed via the built-in ECHO shell command."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"n/a"}]}]},"references":{"reference_data":[{"url":"https://ssd-disclosure.com/ssd-advisory--uniview-preauth-rce/","refsource":"MISC","name":"https://ssd-disclosure.com/ssd-advisory--uniview-preauth-rce/"},{"refsource":"MISC","name":"https://www.uniview.com/About_Us/Security/Notice/202112/920471_140493_0.htm","url":"https://www.uniview.com/About_Us/Security/Notice/202112/920471_140493_0.htm"}]}},"nvd":{"publishedDate":"2023-05-31 20:15:00","lastModifiedDate":"2023-06-14 15:29:00","problem_types":["CWE-120"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseScore":9.8,"baseSeverity":"CRITICAL"},"exploitabilityScore":3.9,"impactScore":5.9}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:uniview:camera_firmware:-:*:*:*:*:*:*:*","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2021","CveId":"45039","Ordinal":"222911","Title":"CVE-2021-45039","CVE":"CVE-2021-45039","Year":"2021"},"notes":[]}}}