{"affected":[{"defaultStatus":"unaffected","product":"VIDAA","source":"CNA: VulnCheck","vendor":"Hisense","versions":[{"status":"affected","version":"0000.01.00a.P0220","versionType":"custom"}]}],"cveId":"CVE-2026-123998","cwes":["CWE-1392","CWE-307"],"description":"Hisense VIDAA Smart TV firmware V0000.01.00a.P0220 contains an authentication bypass vulnerability in its remote-control MQTT broker on TCP port 36669, which accepts publicly documented default credentials and an ineffective 4-digit pairing PIN with no rate limiting or lockout, allowing a brute force of the entire code space in about five seconds, while some actions require no pairing at all. A LAN-adjacent attacker can exploit this to inject key events, change volume, switch input sources, enumerate inputs, launch arbitrary installed applications, and monitor pairing activity, posing a significant risk in hotel deployments where untrusted LAN access is common.","epss":null,"exploits":[{"kind":"exploit","source":"CNA: VulnCheck","url":"https://github.com/yehia-mamdouh/Hisense-Smart-TV-Security-Research"}],"kev":null,"metrics":[{"score":7.2,"severity":"high","source":"CNA: VulnCheck","vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"},{"score":8.3,"severity":"high","source":"CNA: VulnCheck","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H","version":"3.1"}],"modifiedAt":1793991596705,"publishedAt":1793991596705,"references":[{"source":"CNA: VulnCheck","tags":["technical-description","exploit"],"url":"https://github.com/yehia-mamdouh/Hisense-Smart-TV-Security-Research"},{"source":"CNA: VulnCheck","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/hisense-vidaa-smart-tv-mqtt-broker-authentication-bypass"}],"remediation":[],"revision":"45c253a2ebfbd2348c664e8b1f179775a1a0251cfe129da8c09f0ca6da97e0e4","sources":[{"modifiedAt":1793991596705,"name":"CNA: VulnCheck","retrievedAt":1793992252613,"url":"https://www.cve.org/CVERecord?id=CVE-2026-123998"}],"ssvc":null,"status":"published","title":"Hisense VIDAA Smart TV MQTT Broker Authentication Bypass","updatedAt":1793992252613}