How severe is CVE-2020-28055?

CVE-2020-28055 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-28055 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (39th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-28055?

CVE-2020-28055 primarily affects Tcl 32s330 Firmware. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-28055?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2020-28055 published?

CVE-2020-28055 was published on 2020-11-10 and last updated on 2026-06-17.

CVE-2020-28055

CVE-2020-28055 is a high-severity vulnerability in Tcl 32s330 Firmware with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-732.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 7.2
EPSS exploit prediction: 1% (39th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-732
Affected product: Tcl 32s330 Firmware
Published: 2020-11-10
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2020-28055?: 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.
How severe is CVE-2020-28055?: CVE-2020-28055 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-28055 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (39th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-28055?: CVE-2020-28055 primarily affects Tcl 32s330 Firmware. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-28055?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-28055 published?: CVE-2020-28055 was published on 2020-11-10 and last updated on 2026-06-17.

References

Affected products (7)

cpe:2.3:o:tcl:32s330_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:tcl:40s330_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:tcl:43s434_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:tcl:50s434_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:tcl:55s434_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:tcl:65s434_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:tcl:75s434_firmware:*:*:*:*:*:*:*:*

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