cvedb.io
CVE-2021-40120
MEDIUM · CVSS 6.5
EPSS exploitation probability: 0%
Published 2021-11-04T16:15:09.430 · Last modified 2026-06-17T04:06:33.550

Summary

A vulnerability in the web-based management interface of certain Cisco Small Business RV Series Routers could allow an authenticated, remote attacker with administrative privileges to inject arbitrary commands into the underlying operating system and execute them using root-level privileges. This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by sending malicious input to a specific field in the web-based management interface of an affected device. A successful exploit could allow the attacker to execute arbitrary commands on the underlying Linux operating system as a user with root-level privileges.

Affected products

cisco — ios_xr

Does this affect you?

Add your gear to cvedb and we'll alert you only when cisco ships something exploited.

Check my exposure →

References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.