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CVE-2020-27403

24
FAUCET Score

CVE-2020-27403 is a critical information disclosure vulnerability affecting specific TCL Android Smart TV series (V8-R851T02-LF1 V295 and below, V8-T658T01-LF1 V373 and below). An unprivileged attacker on the adjacent network can access an insecure web server on port 7989 (and potentially other ports like 7983), which lists and allows downloading of sensitive system files. This vulnerability has a CVSS score of 6.5 (Medium) due to its low attack complexity and high impact on confidentiality, allowing access to private keys, saved passwords, and other critical data. There is currently no known active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< v8-r851t10-lf1v091CPE matchmatch criteria
cpe:2.3:o:tcl:32s330_firmware:*:*:*:*:*:*:*:*
< v8-r851t10-lf1v091CPE matchmatch criteria
cpe:2.3:o:tcl:40s330_firmware:*:*:*:*:*:*:*:*
< v8-r851t02-lf1v440CPE matchmatch criteria
cpe:2.3:o:tcl:43s434_firmware:*:*:*:*:*:*:*:*
< v8-r851t02-lf1v440CPE matchmatch criteria
cpe:2.3:o:tcl:50s434_firmware:*:*:*:*:*:*:*:*
< v8-r851t02-lf1v440CPE matchmatch criteria
cpe:2.3:o:tcl:55s434_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.69%
Probability of exploitation in next 30 days
EPSS Percentile
84.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0268 is in the 97th percentile among its peer group of 1,802 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

github.com / sickcodes
Third Party Advisory
github.com / sickcodes/security/blob/master/advisories/SICK-2020-009.md
ExploitThird Party Advisory
github.com / sickcodes/security/blob/master/etc/CVE-2020-27403_CVE-2020-28055_GlobalFAQ.pdf
Third Party Advisory
github.com / sickcodes/security/blob/master/etc/CVE-2020-27403_CVE-2020-28055_Press-Statement-and-Questions_11162020.pdf
Third Party Advisory
github.com / sickcodes/security/issues/1
Third Party Advisory
securityledger.com / 2020/11/security-holes-opened-back-door-to-tcl-android-smart-tvs
Third Party Advisory
securityledger.com / 2020/11/tv-maker-tcl-denies-back-door-promises-better-process
Third Party Advisory
sick.codes / extraordinary-vulnerabilities-discovered-in-tcl-android-tvs-now-worlds-3rd-largest-tv-manufacturer
ExploitThird Party Advisory
sick.codes / sick-2020-009
ExploitThird Party Advisory
support.tcl.com / vulnerabilities-found-in-tcl-android-tvs
Vendor Advisory