RCE in Cisco Small Business Rv Series Router Firmware

CVE-2023-20118

A vulnerability in the web-based management interface of Cisco Small Business Routers 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. Cisco has not and will not release software updates that address this vulnerability. However, administrators may disable the affected feature as described in the Workarounds ["#workarounds"] section. {{value}} ["%7b%7bvalue%7d%7d"])}]]

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.541 (98.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N.

Affected products

Weakness classification (CWE)

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: .

Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2023-20118?
CVE-2023-20118 is a medium-severity vulnerability in Cisco Small Business Rv Series Router Firmware, classified under Command Injection. CVSS score: 6.5/10. Published 2023-04-13.
How severe is CVE-2023-20118?
Medium severity. CVSS v3 base score is 6.5 out of 10.
Is CVE-2023-20118 known to be exploited?
Yes. CVE-2023-20118 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2025-03-03), indicating it is being actively exploited. 5 public proof-of-concept repositories are indexed.