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TI-2026-86080 Aliases CVE-2026-123998GHSA-hjch-8qgq-882h

Authentication bypass in Hisense VIDAA Smart TV MQTT broker

Priority LOW 31CWE-1392Published · Updated

Key facts

Attack vector
Adjacent network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
Low · High · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-307.

Summary

Hisense VIDAA Smart TV firmware V0000.01.00a.P0220 contains an authentication bypass in its remote-control MQTT broker on TCP port 36669. The broker accepts publicly documented default credentials and a 4-digit pairing PIN with no rate limiting, so an attacker can brute force the PIN in about five seconds. A LAN-adjacent attacker can inject key events, change volume, switch inputs and launch installed applications. A public exploit is linked in the references.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Description from the CNA

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.

Why it matters now

EPSS 0.0023 13th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
HisenseVIDAA0000.01.00a.P0220—No fix listedCNA
  • VIDAA VendorHisense Affected 0000.01.00a.P0220 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for Hisense VIDAA.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Timeline

  1. 2026-11-06 Threatist record created from CVE-2026-123998
  2. 2026-11-06 Alias added: GHSA-hjch-8qgq-882h
  3. 2026-11-08 Priority changed: MEDIUM → LOW

References

Exploit 1

  • TI-2026-86075 Unauthenticated WebDriver access in Hisense VIDAA Smart TV CVSS 4.0HIGH 8.7
  • TI-2026-86079 Denial of service in Hisense VIDAA Smart TV via UPnP AVTransport CVSS 4.0HIGH 7.1
  • TI-2019-11476 The Hisense F17 Android device with a build fingerprint of… CVSS 3.1MEDIUM 5.5
  • TI-2019-11464 The Hisense U965 Android device with a build fingerprint of… CVSS 3.1MEDIUM 5.5
  • TI-2026-86076 Hisense VIDAA Smart TV DIAL Service Unauthenticated Access CVSS 4.0MEDIUM 5.3
  • TI-2026-86078 Missing authentication in Hisense VIDAA Smart TV UPnP/DLNA service CVSS 4.0MEDIUM 4.8
See all 7 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences