How severe is CVE-2021-27942?

CVE-2021-27942 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over physical access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-27942 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-27942?

CVE-2021-27942 primarily affects Vizio P65-f1 Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-27942?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-27942 published?

CVE-2021-27942 was published on 2021-08-03 and last updated on 2026-06-17.

CVE-2021-27942

CVE-2021-27942 is a medium-severity vulnerability in Vizio P65-f1 Firmware with a CVSS 3.x base score of 6.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 3.x base score 6.8)
CVSS v2: 7.2
EPSS exploit prediction: 0% (36th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Vizio P65-f1 Firmware
Published: 2021-08-03
Last modified: 2026-06-17

Description

Vizio P65-F1 6.0.31.4-2 and E50x-E1 10.0.31.4-2 Smart TVs allow a threat actor to execute arbitrary code from a USB drive via the Smart Cast functionality, because files on the USB drive are effectively under the web root and can be executed.

Frequently asked questions

What is CVE-2021-27942?: Vizio P65-F1 6.0.31.4-2 and E50x-E1 10.0.31.4-2 Smart TVs allow a threat actor to execute arbitrary code from a USB drive via the Smart Cast functionality, because files on the USB drive are effectively under the web root and can be executed.
How severe is CVE-2021-27942?: CVE-2021-27942 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over physical access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-27942 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-27942?: CVE-2021-27942 primarily affects Vizio P65-f1 Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-27942?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-27942 published?: CVE-2021-27942 was published on 2021-08-03 and last updated on 2026-06-17.

References

https://www.l9group.com/advisories/vizio-tv-code-execution-from-a-usb-drive

Affected products (2)

cpe:2.3:o:vizio:p65-f1_firmware:6.0.31.4-2:*:*:*:*:*:*:*
cpe:2.3:o:vizio:e50x-e1_firmware:10.0.31.4-2:*:*:*:*:*:*:*

More vulnerabilities in Vizio P65-f1 Firmware

CVE-2021-27944 — Critical (CVSS 9.8): Several high privileged APIs on the Vizio P65-F1 6.0.31.4-2 and E50x-E1 10.0.31.4-2 Smart TVs do not enforce access…
CVE-2021-27943 — High (CVSS 7.5): The pairing procedure used by the Vizio P65-F1 6.0.31.4-2 and E50x-E1 10.0.31.4-2 Smart TVs and mobile application is…

All CVEs affecting Vizio P65-f1 Firmware →