CVE-2021-20159 Command injection in Trendnet AC2600 TEW-827DRU

High 8.8 Published 30 Dec 2021 Updated 3 Aug 2024

Attackers can execute arbitrary commands as root via malformed parameters in the system log functionality of Trendnet routers.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2021-20159?

CVE-2021-20159 is a high-severity command injection vulnerability in Trendnet AC2600 TEW-827DRU, published on 30 Dec 2021. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Trendnet AC2600 TEW-827DRU version 2.08B01 is vulnerable to command injection. The system log functionality of the firmware allows for command injection as root by supplying a malformed parameter.

Weakness: CWE-78

Which versions are affected by CVE-2021-20159?

It affects 1 product.

Products include Trendnet Tew-827dru Firmware.

How do I fix CVE-2021-20159?

No fix has been published for CVE-2021-20159 yet. Limit exposure of the affected software until one is available.

Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.

Is CVE-2021-20159 being exploited?

There is no known exploitation of CVE-2021-20159 in the wild and no public exploit code.

Sources

Also known as GHSA-x7qm-wgfg-3vpc.