{"id":"CVE-2026-123998","aliases":[],"cve":{"records":[{"id":"CVE-2026-123998","source":"VulnCheck","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-11-06T18:38:38.543Z","published":"2026-11-06T18:59:56.705Z","modified":"2026-11-09T13:15:39.812Z"}],"publishers":[{"name":"VulnCheck","role":"CNA","organizationId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","modified":"2026-11-06T18:59:56.705Z"},{"name":"CISA-ADP","role":"ADP","organizationId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","modified":"2026-11-09T13:15:39.812Z"}],"references":[{"url":"https://github.com/yehia-mamdouh/Hisense-Smart-TV-Security-Research","tags":["technical-description","exploit"],"source":"VulnCheck"},{"url":"https://www.vulncheck.com/advisories/hisense-vidaa-smart-tv-mqtt-broker-authentication-bypass","tags":["third-party-advisory"],"source":"VulnCheck"}],"weaknesses":[{"id":"CWE-1392","description":"Use of Default Credentials","source":"VulnCheck"},{"id":"CWE-307","description":"Improper Restriction of Excessive Authentication Attempts","source":"VulnCheck"}],"applicability":[],"prioritization":[{"source":"CISA-ADP","type":"SSVC","role":"CISA Coordinator","timestamp":"2026-11-09T13:14:53.074835Z","decisions":[{"name":"Exploitation","value":"poc"},{"name":"Automatable","value":"no"},{"name":"Technical Impact","value":"partial"}]}]},"title":"Hisense VIDAA Smart TV MQTT Broker Authentication Bypass","titleSource":"VulnCheck","descriptionSource":"VulnCheck","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is common.","score":8.3,"severity":"high","published":"2026-11-06T18:59:56.705Z","modified":"2026-11-09T13:15:39.812Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"Hisense","name":"VIDAA","platforms":[],"versions":[{"version":"0000.01.00a.P0220","status":"affected","versionType":"custom"}],"defaultStatus":"unaffected","cpes":[],"source":"VulnCheck","url":"https://www.cve.org/CVERecord?id=CVE-2026-123998"}],"remediation":[],"references":["https://github.com/yehia-mamdouh/Hisense-Smart-TV-Security-Research","https://www.vulncheck.com/advisories/hisense-vidaa-smart-tv-mqtt-broker-authentication-bypass"],"sources":[{"name":"CVE","id":"CVE-2026-123998","modified":"2026-11-09T13:15:39.812Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-123998"}],"assessments":[{"source":"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","score":7.2},{"source":"VulnCheck","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H","score":8.3}],"sourceAffected":[],"observedAt":"2026-11-09T13:25:47.689Z","kev":{"status":"not-listed","checkedAt":"2026-11-15T02:25:31.038Z"},"coverage":[{"source":"NVD","status":"available","checkedAt":"2026-11-06T21:40:32.695Z","attemptedAt":"2026-11-06T21:40:32.695Z"},{"source":"GHSA","status":"available","checkedAt":"2026-11-06T21:40:33.576Z","attemptedAt":"2026-11-06T21:40:33.576Z"},{"source":"EUVD","status":"available","checkedAt":"2026-11-06T21:40:32.752Z","attemptedAt":"2026-11-06T21:40:32.752Z"},{"source":"EPSS","status":"no-result","checkedAt":"2026-11-06T21:40:33.203Z","attemptedAt":"2026-11-06T21:40:33.203Z"}],"evidence":[{"source":"NVD","id":"CVE-2026-123998","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-123998","modified":"2026-11-06T19:17:45.427","score":7.2,"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","checkedAt":"2026-11-06T21:40:32.695Z"},{"source":"NVD","id":"CVE-2026-123998","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-123998","modified":"2026-11-06T19:17:45.427","score":8.3,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H","checkedAt":"2026-11-06T21:40:32.695Z"},{"source":"ENISA EUVD","id":"EUVD-2026-118428","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-118428","modified":"Nov 6, 2026, 6:59:56 PM","score":7.2,"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","checkedAt":"2026-11-06T21:40:32.752Z"},{"source":"GitHub Advisory Database","id":"GHSA-hjch-8qgq-882h","url":"https://github.com/advisories/GHSA-hjch-8qgq-882h","modified":"2026-11-06T21:31:32Z","score":8.3,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H","checkedAt":"2026-11-06T21:40:33.576Z"}],"aiSummary":{"text":"Hisense VIDAA Smart TV firmware V0000.01.00a.P0220 has an authentication bypass vulnerability in its MQTT broker, allowing a LAN-adjacent attacker to inject key events and launch applications. The broker accepts default credentials and has no rate limiting or lockout for the 4-digit pairing PIN. This poses a risk in hotel deployments with untrusted LAN access.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-11-06T20:36:42.504Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2026-123998"}]}}