Auth bypass in Hisense Vidaa
CVE-2026-123994
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.
Vulnerability class: Broken Authentication
Published .
CVSS v3 metric
CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.002 (9.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 9th percentile — 9.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
The 30-day trend appears once there are two daily scores.
Affected products
- Hisense Vidaa — versions 0000.01.00a.P0220
Weakness classification (CWE)
References
- github.com/yehia-mamdouh/Hisense-Smart-TV-Security-Research (technical-description, exploit)
- www.vulncheck.com/advisories/hisense-vidaa-smart-tv-dial-service-unauthenticate… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-123994?
- CVE-2026-123994 is a medium-severity vulnerability in Hisense Vidaa, classified under Missing Authentication for Critical Function. CVSS score: 6.3/10. Published 2026-11-06.
- How severe is CVE-2026-123994?
- Medium severity. CVSS v3 base score is 6.3 out of 10.