CVE-2020-28055: tcl 32s330_firmware
Vulnerability summary
CVE-2020-28055 is a high (CVSS 7.8) vulnerability in tcl 32s330_firmware. EPSS estimates a 0.51% chance of exploitation in the next 30 days, higher than 43.3% of scored vulnerabilities. 3 public exploits are recorded.
Public exploit (GitHub, Date unknown)
Source freshness unavailable
How is this decided?Timeline
- 10-11-2020PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
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.
CVSS metrics
2 scores · 1 source · 2 versionsEPSS trend
Probability
0.51%
Chance of exploitation in the next 30 days
Percentile
43%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.51% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
3 foundSecurity
Maturity: poc
Exploit Reference (sick.codes)
Maturity: unknown
Exploit Reference (sick.codes)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Tcl7 products
- 32s330_firmware< v8-r851t10-lf1v091
- 40s330_firmware< v8-r851t10-lf1v091
- 43s434_firmware< v8-r851t02-lf1v440
- 50s434_firmware< v8-r851t02-lf1v440
- 55s434_firmware< v8-r851t02-lf1v440
1 vendor · 7 products
References
10 links- sick.codes/extraordinary-vulnerabilities-discovered-in-tcl-android-tvs-now-worlds-3rd-largest-tv-manufacturerX Refsource MISCExploitThird Party Advisory
- github.com/sickcodes/security/blob/master/advisories/SICK-2020-012.mdX Refsource MISCExploitThird Party Advisory
- github.com/sickcodes/security/blob/master/etc/CVE-2020-27403_CVE-2020-28055_GlobalFAQ.pdfX Refsource MISCThird Party Advisory
- securityledger.com/2020/11/security-holes-opened-back-door-to-tcl-android-smart-tvs/X Refsource MISCThird Party Advisory
- securityledger.com/2020/11/tv-maker-tcl-denies-back-door-promises-better-process/X Refsource MISCThird Party Advisory