HIGH

CVE-2021-20122

CVSS v3

7.2

HIGH

EPSS Score

6.5 %

exploit probability, as of 2026-10-18

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2021-20122 yet.

Full record on NVD

Description

The Telus Wi-Fi Hub (PRV65B444A-S-TS) with firmware version 3.00.20 is affected by an authenticated command injection vulnerability in multiple parameters passed to tr69_cmd.cgi. A remote attacker connected to the router's LAN and authenticated with a super user account, or using a bypass authentication vulnerability like CVE-2021-20090 could leverage this issue to run commands or gain a shell as root on the target device.

Technical details

Published: 2021-10-11

Frequently asked questions

What is CVE-2021-20122?

Is CVE-2021-20122 actively exploited?

Active exploitation of CVE-2021-20122 has not been confirmed. Its EPSS score was 6.5% on 2026-10-18, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-20122?

CVE-2021-20122 has a CVSS v3 base score of 7.2 (HIGH severity).

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