Vulnerability Description
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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Ios Xr | 4.2.3.06 |
| Cisco | Rv016 | - |
| Cisco | Rv042 | - |
| Cisco | Rv042G | - |
| Cisco | Rv082 | - |
| Cisco | Rv320 | - |
| Cisco | Rv325 | - |
| Cisco | Application Extension Platform | 1.5.1.13 |
Related Weaknesses (CWE)
References
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sVendor Advisory
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sVendor Advisory
FAQ
What is CVE-2021-40120?
CVE-2021-40120 is a vulnerability with a CVSS score of 6.5 (MEDIUM). 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...
How severe is CVE-2021-40120?
CVE-2021-40120 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-40120?
Check the references section above for vendor advisories and patch information. Affected products include: Cisco Ios Xr, Cisco Rv016, Cisco Rv042, Cisco Rv042G, Cisco Rv082.