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Fencer Intel
high 7.8

CVE-2020-28055 json

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…

published 5y ago modified 4mo ago also EUVD-2020-20543

cvss
7.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 43%
public exploits
0
none known

Summary

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.

Patch / fix

  • tcl 32s330_firmware v8-r851t10-lf1v091
  • tcl 40s330_firmware v8-r851t10-lf1v091
  • tcl 43s434_firmware v8-r851t02-lf1v440
  • tcl 50s434_firmware v8-r851t02-lf1v440
  • tcl 55s434_firmware v8-r851t02-lf1v440
  • tcl 65s434_firmware v8-r851t02-lf1v440
  • tcl 75s434_firmware v8-r851t02-lf1v440

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Exploit prediction

0.51% chance of exploitation in the next 30 days, higher than 43% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • sick.codes https://sick.codes/extraordinary-vulnerabilities-discovered-in-tcl-android-tvs-now-worlds-3rd-largest-tv-manufacturer/ referenced PoC, tagged "exploit" by a source, unverified
  • github.com https://github.com/sickcodes/security/blob/master/advisories/SICK-2020-012.md referenced PoC, tagged "exploit" by a source, unverified
  • sick.codes https://sick.codes/sick-2020-012 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.2 AV:L/AC:L/Au:N/C:C/I:C/A:C

Classification

Weakness
  • CWE-732 Incorrect Permission Assignment for Critical Resource

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.