CVE-2020-28055
A vulnerability in the TCL Android Smart TV series V8-R851T02-LF1 V295 and below and V8-T658T01...
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.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
7.8
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.
- Record
CVE-2020-28055- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 7.2 High
AV:L/AC:L/Au:N/C:C/I:C/A:C - Weakness
- CWE-732
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2020-28055- Updated
- 2026-11-02
EUVDEUVD-2020-20543 No score
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.
- Record
EUVD-2020-20543- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-6f2c-v56g-c746 No score
A vulnerability in the TCL Android Smart TV series V8-R851T02-LF1 V295 and below and V8-T658T01...
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.
- Record
GHSA-6f2c-v56g-c746- Weakness
- CWE-732
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-28055 is a high vulnerability (CVSS 7.8) in Tcl 32s330 Firmware, published November 10, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.51%, the 43rd percentile. No source names a fixed version.
References
twitter.com/sickcodes
twitter.com/johnjhacking
sick.codes/extraordinary-vulnerabilities-discovered-in-tcl-android-tvs-now-worlds-3rd-largest-tv-manufacturer
github.com/sickcodes/security/blob/master/advisories/SICK-2020-012.md
sick.codes/sick-2020-012
github.com/sickcodes/security/blob/master/etc/CVE-2020-27403_CVE-2020-28055_Press-Statement-and-Questions_11162020.pdf
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github.com/sickcodes/security/blob/master/etc/CVE-2020-27403_CVE-2020-28055_GlobalFAQ.pdf
securityledger.com/2020/11/security-holes-opened-back-door-to-tcl-android-smart-tvs
securityledger.com/2020/11/tv-maker-tcl-denies-back-door-promises-better-process
support.tcl.com/vulnerabilities-found-in-tcl-android-tvs
nvd.nist.gov/vuln/detail/CVE-2020-28055
github.com/advisories/GHSA-6f2c-v56g-c746