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CVE-2026-123998 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:8.3 HIGHVector:CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/yehia-mamdouh/Hisense-Smart-TV-Security-Research	[email protected]
https://www.vulncheck.com/advisories/hisense-vidaa-smart-tv-mqtt-broker-authentication-bypass	[email protected]

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-1392	Use of Default Credentials	[email protected]
CWE-307	Improper Restriction of Excessive Authentication Attempts	[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

1 change record found show changes