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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.54%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.54% probability · 45th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Affected
- hindotech/hk1 box s905x3 firmware
- Source
- cve@mitre.org
EPSS 0.5% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
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
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.