CVE-2020-27402

Name: CVE-2020-27402
Creator: NVD / NIST
Published: 2020-11-05T15:15:34.92+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.53%

Last modified Jun 17, 2026

CVE-2020-27402 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. The HK1 Box S905X3 TV Box contains a vulnerability that allows a local unprivileged user to escalate to root using the /system/xbin/su binary via a serial port (UART) connection or using adb.. EPSS estimates a 0.53% chance of exploitation in the next 30 days.

Description

The HK1 Box S905X3 TV Box contains a vulnerability that allows a local unprivileged user to escalate to root using the /system/xbin/su binary via a serial port (UART) connection or using adb.

Metrics

CVSS 3.1

7.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.53%

40.7th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Hindotech	Hk1 Box S905x3 Firmware	hk1_x3_s905x3_4bit_v11_2019-11-05

References

https://github.com/sickcodes/security/blob/master/advisories/SICK-2020-004.mdExploit, Third Party Advisory
https://sick.codes/sick-2020-004/Exploit, Third Party Advisory
https://threatpost.com/authentication-bug-android-smart-tv-data-theft/160025/Third Party Advisory
https://www.cybersecurity-help.cz/vdb/SB2020101404Third Party Advisory
https://www.securitylab.ru/news/513051.phpThird Party Advisory
https://github.com/sickcodes/security/blob/master/advisories/SICK-2020-004.mdExploit, Third Party Advisory
https://sick.codes/sick-2020-004/Exploit, Third Party Advisory
https://threatpost.com/authentication-bug-android-smart-tv-data-theft/160025/Third Party Advisory
https://www.cybersecurity-help.cz/vdb/SB2020101404Third Party Advisory
https://www.securitylab.ru/news/513051.phpThird Party Advisory

Timeline

Published: Nov 5, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-27402?

The HK1 Box S905X3 TV Box contains a vulnerability that allows a local unprivileged user to escalate to root using the /system/xbin/su binary via a serial port (UART) connection or using adb.

How severe is CVE-2020-27402?

CVE-2020-27402 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.53% probability of exploitation in the next 30 days.

How do I fix CVE-2020-27402?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-27402?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST