CVE-2021-20121

4.0 mediumEPSS 0.5%

Medium (4.0) in telus prv65b444a-s-ts firmware. EPSS 0.5% chance of exploitation in the next 30 days.

The Telus Wi-Fi Hub (PRV65B444A-S-TS) with firmware version 3.00.20 is vulnerable to an authenticated arbitrary file read. An authenticated user with physical access to the device can read arbitrary files from the device by preparing and connecting a specially prepared USB drive to the device, and making a series of crafted requests to the device's web interface.

Severity

CVSS 3.1

4.0 medium

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

EPSS: 0.5% chance of exploitation in the next 30 days; higher than 42% of CVEs (scores of 2026-10-31)
Published: 2021-10-11
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

telus:prv65b444a-s-ts_firmware

References

https://www.tenable.com/security/research/tra-2021-41
https://www.tenable.com/security/research/tra-2021-41

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