{"id":"CVE-2020-28055","aliases":["EUVD-2020-20543","GHSA-6f2c-v56g-c746"],"status":"published","title":"A vulnerability in the TCL Android Smart TV series V8-R851T02-LF1 V295 and below and V8-T658T01...","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 \u0026 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.","severity":{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.00507,"percentile":0.43757,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-732"],"published":"2020-11-10T17:53:07Z","modified":"2026-06-17T03:10:04Z","products":[{"vendor":"tcl","product":"32s330_firmware"},{"vendor":"tcl","product":"40s330_firmware"},{"vendor":"tcl","product":"43s434_firmware"},{"vendor":"tcl","product":"50s434_firmware"},{"vendor":"tcl","product":"55s434_firmware"},{"vendor":"tcl","product":"65s434_firmware"},{"vendor":"tcl","product":"75s434_firmware"}],"references":[{"url":"https://twitter.com/sickcodes/","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://twitter.com/johnjhacking/","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://sick.codes/extraordinary-vulnerabilities-discovered-in-tcl-android-tvs-now-worlds-3rd-largest-tv-manufacturer/","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://github.com/sickcodes/security/blob/master/advisories/SICK-2020-012.md","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://sick.codes/sick-2020-012","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://github.com/sickcodes/security/blob/master/etc/CVE-2020-27403_CVE-2020-28055_Press-Statement-and-Questions_11162020.pdf","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://github.com/sickcodes/security/blob/master/etc/CVE-2020-27403_CVE-2020-28055_GlobalFAQ.pdf","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://securityledger.com/2020/11/security-holes-opened-back-door-to-tcl-android-smart-tvs/","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://securityledger.com/2020/11/tv-maker-tcl-denies-back-door-promises-better-process/","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://support.tcl.com/vulnerabilities-found-in-tcl-android-tvs","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-28055"},{"url":"https://github.com/advisories/GHSA-6f2c-v56g-c746"}],"sources":{"cve":[{"id":"CVE-2020-28055","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 \u0026 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.","status":"published","published":"2020-11-10T17:53:07Z","modified":"2024-08-04T16:33:57.483Z","updated_at":"2026-11-02T14:35:57.017407Z"}],"euvd":[{"id":"EUVD-2020-20543","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 \u0026 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.","status":"published","published":"2020-11-10T17:53:07Z","modified":"2024-08-04T16:33:57Z","updated_at":"2026-11-03T03:07:10.69897Z"}],"ghsa":[{"id":"GHSA-6f2c-v56g-c746","title":"A vulnerability in the TCL Android Smart TV series V8-R851T02-LF1 V295 and below and V8-T658T01...","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 \u0026 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.","status":"published","published":"2022-05-24T17:34:03Z","modified":"2023-01-29T05:05:19Z","cwes":["CWE-732"],"updated_at":"2026-11-02T14:45:45.932105Z"}],"nvd":[{"id":"CVE-2020-28055","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 \u0026 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.","status":"published","published":"2020-11-10T18:15:12.137Z","modified":"2026-06-17T03:10:04.897Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":7.2,"vector":"AV:L/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-732"],"updated_at":"2026-11-02T14:06:24.137599Z"}]}}