CVE-2021-20161 Auth bypass in Trendnet AC2600 TEW-827DRU
Attackers with physical access can connect to the UART port to gain a root shell without authentication, allowing full device control.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-20161?
CVE-2021-20161 is a medium-severity authentication bypass vulnerability in Trendnet AC2600 TEW-827DRU, published on 30 Dec 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
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.
Which versions are affected by CVE-2021-20161?
It affects 1 product.
Products include Trendnet Tew-827dru Firmware.
How do I fix CVE-2021-20161?
No fix has been published for CVE-2021-20161 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2021-20161 being exploited?
There is no known exploitation of CVE-2021-20161 in the wild and no public exploit code.
Other vulnerabilities in Trendnet AC2600 TEW-827DRU
Sources
Also known as GHSA-mx5q-v692-hx4m.