What is CVE-2021-27943?

CVE-2021-27943 is a high-severity vulnerability in Vizio E50x-E1, classified under Improper Restriction of Excessive Authentication Attempts. CVSS score: 7.5/10. Published 2021-08-02.

How severe is CVE-2021-27943?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Vizio E50x-E1

CVE-2021-27943

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 vulnerable to a brute-force attack (against only 10000 possibilities), allowing a threat actor to forcefully pair the device, leading to remote control of the TV settings and configurations.

EPSS: 0.009 (56.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

Affected products

Vizio E50x-e1
Vizio E50x-e1_firmware — versions 10.0.31.4-2
Vizio P65-f1
Vizio P65-f1_firmware — versions 6.0.31.4-2
N/a — versions n/a

Weakness classification (CWE)

CWE-307 — Improper Restriction of Excessive Authentication Attempts

References

cve@mitre.org (x_refsource_MISC, Vendor Advisory)
cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-27943?: CVE-2021-27943 is a high-severity vulnerability in Vizio E50x-E1, classified under Improper Restriction of Excessive Authentication Attempts. CVSS score: 7.5/10. Published 2021-08-02.
How severe is CVE-2021-27943?: High severity. CVSS v3 base score is 7.5 out of 10.