What is CVE-2020-21406?

CVE-2020-21406 is a high-severity vulnerability in Rk Max Smart Tv Box Project. CVSS score: 7.5/10. Published 2022-07-20.

How severe is CVE-2020-21406?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Rk Max Smart Tv Box Project

CVE-2020-21406

An issue was discovered in RK Smart TV Box MAX and V88 SmartTV box that allows attackers to cause a denial of service via the switchNextDisplayInterface service.

Published 2022-07-20 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.009 (58.8th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 58.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: +0.000

Affected products

References

github.com/helloworldxp/TVBoxBugs/blob/master/RK_MAX_V88_SmartTV_Vulnerability (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2020-21406?: CVE-2020-21406 is a high-severity vulnerability in Rk Max Smart Tv Box Project. CVSS score: 7.5/10. Published 2022-07-20.
How severe is CVE-2020-21406?: High severity. CVSS v3 base score is 7.5 out of 10.