CVE-2023-20026 Command injection in Cisco Small Business RV Series Router Firmware

Medium 6.5 Published 19 Jan 2023 Updated 12 Mar 2025

Authenticated attackers can execute arbitrary commands with root privileges on Cisco Small Business RV Series Routers via the web interface.

Exploited in the wild: Not known
Login needed: An administrator
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2023-20026?

CVE-2023-20026 is a medium-severity command injection vulnerability in Cisco Small Business RV Series Router Firmware, published on 19 Jan 2023. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

A vulnerability in the web-based management interface of Cisco Small Business RV016, RV042, RV042G, RV082, RV320 and RV325 Routers could allow an authenticated, remote attacker to execute arbitrary commands on an affected device. This vulnerability is due to improper validation of user input within incoming HTTP packets. An attacker could exploit this vulnerability by sending a crafted HTTP request to the web-based management interface. A successful exploit could allow the attacker to gain root-level privileges and access unauthorized data. To exploit this vulnerability, an attacker would need to have valid administrative credentials on the affected device.

Weakness: CWE-20, CWE-77

Which versions are affected by CVE-2023-20026?

It affects 4 products.

Products include Cisco Rv016 Firmware, Cisco Rv042 Firmware, Cisco Rv042g Firmware, Cisco Rv082 Firmware.

How do I fix CVE-2023-20026?

No fix has been published for CVE-2023-20026 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-2023-20026 being exploited?

There is no known exploitation of CVE-2023-20026 in the wild and no public exploit code.

Sources

Also known as GHSA-f3r5-v4wr-72qr.