CVE-2020-28055

A vulnerability in the TCL Android Smart TV series V8-R851T02-LF1 V295 and below and V8-T658T01-LF1 V373 and below by TCL Technology Group Corporation allows a local unprivileged attacker, such as a malicious App, to read & write to the /data/vendor/tcl, /data/vendor/upgrade, and /var/TerminalManager directories within the TV file system. An attacker, such as a malicious APK or local unprivileged user could perform fake system upgrades by writing to the /data/vendor/upgrage folder.

CVSS v3.1 NVD

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

CVSS v2.0 NVD

7.2 HIGHAV:L/AC:L/Au:N/C:C/I:C/A:C

EPSS

0.51% chance of exploitation in the next 30 days, 42nd percentile

Published

2020-11-10

Updated

2024-08-04

Proof-of-concept exploits (2)

• https://sick.codes/extraordinary-vulnerabilities-discovered-in-tcl-android-tvs-now-worlds…
• https://sick.codes/sick-2020-012

Security advisories

• https://support.tcl.com/vulnerabilities-found-in-tcl-android-tvs
• sickcodes/security/blob/master/advisories/SICK-2020-012.md
• https://securityledger.com/2020/11/security-holes-opened-back-door-to-tcl-android-smart-t…
• https://securityledger.com/2020/11/tv-maker-tcl-denies-back-door-promises-better-process
• https://sick.codes/extraordinary-vulnerabilities-discovered-in-tcl-android-tvs-now-worlds…
• https://twitter.com/johnjhacking
• https://twitter.com/sickcodes

References

• CVE Record
• NVD entry