What is CVE-2026-123997?

CVE-2026-123997 is a medium-severity vulnerability in Hisense Vidaa, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 6.5/10. Published 2026-11-06.

How severe is CVE-2026-123997?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Resource exhaustion in Hisense Vidaa

CVE-2026-123997

Hisense VIDAA Smart TV firmware V0000.01.00a.P0220 contains an unauthenticated denial-of-service vulnerability in the UPnP/DLNA AVTransport SOAP service that allows LAN-adjacent attackers to freeze the entire television software layer by sending a crafted SetAVTransportURI request on TCP port 38400. Attackers can exploit this flaw without credentials to render the device completely unresponsive to remote control or front-panel input, requiring a physical power cycle to restore functionality.

Published 2026-11-06.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Hisense Vidaa — versions 0000.01.00a.P0220

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

References

Researcher Disclosure (technical-description, exploit)
VulnCheck Advisory: Hisense VIDAA Smart TV Unauthenticated DoS via SetAVTransportURI (third-party-advisory)

Frequently asked questions

What is CVE-2026-123997?: CVE-2026-123997 is a medium-severity vulnerability in Hisense Vidaa, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 6.5/10. Published 2026-11-06.
How severe is CVE-2026-123997?: Medium severity. CVSS v3 base score is 6.5 out of 10.