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CVE-2026-123998

8.3, high

Hisense VIDAA Smart TV firmware V0000.01.00a.P0220 contains an authentication bypass vulnerability in its remote-control MQTT broker on…

NVD (opens in a new tab) CVE.org (opens in a new tab)
CVSS
8.3, high high CVSS v3.1
EPSS, next 30 days
n/a
Exploitation
No public evidence
Published
6 Nov 2026yesterday

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.

Details

Vendor
Hisense
Product
VIDAA
Weakness
CWE-307 (opens in a new tab)
Status
Received
Updated
6 Nov 2026
Assigner
disclosure@vulncheck.com

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H

References 2

Advisories 1

Other references 1

The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.

Other Hisense CVEs

Every Hisense CVE we hold

Same vendor in what we hold, not a known link between the flaws.

  • CVE-2026-123993 Hisense VIDAA Missing Authentication for Critical Function Vulnerability 8.8, high

Beyond this page

Is CVE-2026-123998 in your network?

This page tells you how dangerous CVE-2026-123998 is out there. Whether it sits on one of your devices, only a scan of your own network can tell. That is what our systems do, every day, for the companies we protect.

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Check your exposure

Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 7 Nov 2026, not the live upstream state.