Is CVE-2026-123997 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-123997 being exploited in the wild.

How severe is CVE-2026-123997?

Medium severity, with a CVSS score of 6.5, published 6 November 2026.

Which products and versions are affected?

Hisense VIDAA Smart TV V0000.01.00a.P0220 and earlier.

Is there a fix for CVE-2026-123997?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-123997 attacked?

It is attacked from the adjacent network, in a network appliance.

Am I affected by CVE-2026-123997?

Check whether you run Hisense VIDAA Smart TV at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-123997: Hisense VIDAA Smart TV denial of service in UPnP AVTransport

CVE-2026-123997 · Severity: medium · CVSS 6.5 · Published 2026-11-06

Hisense VIDAA Smart TVs contain a vulnerability in their UPnP/DLNA media control service that allows attackers on the same local network to freeze the entire television without needing any credentials. A single specially crafted network request can render the TV completely unresponsive to remote control and physical buttons, forcing users to physically unplug and restart the device to regain control.

Technologies: Hisense VIDAA Smart TV. Vendors: Hisense.

Quick answers

Is CVE-2026-123997 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-123997 being exploited in the wild.
How severe is CVE-2026-123997?: Medium severity, with a CVSS score of 6.5, published 6 November 2026.
Which products and versions are affected?: Hisense VIDAA Smart TV V0000.01.00a.P0220 and earlier.
Is there a fix for CVE-2026-123997?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-123997 attacked?: It is attacked from the adjacent network, in a network appliance.
Am I affected by CVE-2026-123997?: Check whether you run Hisense VIDAA Smart TV at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

An unauthenticated denial-of-service vulnerability exists in the UPnP AVTransport SOAP service running on TCP port 38400, exploitable via a crafted SetAVTransportURI request. The flaw allows network-adjacent attackers to freeze the television's software layer without authentication or user interaction. The vulnerability is triggered by resource exhaustion (CWE-770) and renders the device unresponsive until a power cycle is performed.

Affected products

Hisense VIDAA Smart TV V0000.01.00a.P0220 and earlier

Timeline

2026-11-06: disclosed

References

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