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CVE-2026-123998

7.2 highEPSS 0.2%

High (7.2) in hisense vidaa. EPSS 0.2% estimated probability of exploitation activity in the next 30 days.

On this page
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.

Severity

CVSS 4.0

7.2 high
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

CVSS 3.1

8.3 high
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H
EPSS
0.2% estimated probability of exploitation activity in the next 30 days; 14th percentile. Scored 2026-11-10. A forecast for this CVE across the internet, not for your own systems.
CISA's assessment (SSVC)
Exploitation: PoC · Automatable: no · Technical impact: partial, assessed 2026-11-09. From CISA's Vulnrichment in the CVE List: whether it is exploited, whether exploiting it can be automated, and how much control it gives.
CWEs
CWE-307 Improper Restriction of Excessive Authentication Attempts
CWE-1392 Use of Default Credentials
OWASP Top 10
A07:2025 Authentication Failures
Published
Modified
NVD analysis
Awaiting analysis
Record from
the NVD, synced

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Affected

Versions

From the CNA's record in the CVE List.

ProductAffected
Hisense VIDAA0000.01.00a.P0220

Attack patterns (CAPEC)

  • CAPEC-16 Dictionary-based Password Attack Likelihood: Medium · Severity: High
  • CAPEC-49 Password Brute Forcing Likelihood: Medium · Severity: High
  • CAPEC-560 Use of Known Domain Credentials Likelihood: High · Severity: High
  • CAPEC-565 Password Spraying Likelihood: High · Severity: High
  • CAPEC-600 Credential Stuffing Likelihood: High · Severity: High
  • CAPEC-652 Use of Known Kerberos Credentials Likelihood: Medium · Severity: High
  • CAPEC-653 Use of Known Operating System Credentials Likelihood: High · Severity: High

The attack patterns MITRE's CAPEC relates to this record's weaknesses, as MITRE names them. Credits.

References

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