CVE Vulnerabilities

CVE-2021-20161

Improper Authentication

Published: Dec 30, 2021 | Modified: Jul 12, 2022
CVSS 3.x
6.8
MEDIUM
Source:
NVD
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.x
7.2 HIGH
AV:L/AC:L/Au:N/C:C/I:C/A:C
RedHat/V2
RedHat/V3
Ubuntu

Trendnet AC2600 TEW-827DRU version 2.08B01 does not have sufficient protections for the UART functionality. A malicious actor with physical access to the device is able to connect to the UART port via a serial connection. No username or password is required and the user is given a root shell with full control of the device.

Weakness

When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.

Affected Software

Name Vendor Start Version End Version
Tew-827dru_firmware Trendnet 2.08b01 2.08b01

Potential Mitigations

References