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CVE-2023-20118

High 7.2 Exploited in the wild (KEV)

Confirmed active exploitation — CISA KEV catalog

Name
Cisco Small Business RV Series Routers Command Injection Vulnerability
Added to catalog
Remediation due date (US federal)
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.

Description

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"])}]]

Metrics

CVSS 3.1
7.2 (HIGH) Score source: NVD CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
EPSS — exploit probability
54% (percentile: 99) as of 2 November 2026
CWE
CWE-77

Affected products

cisco: rv016 firmware; cisco: rv016; cisco: rv042 firmware; cisco: rv042; cisco: rv042g firmware; cisco: rv042g; cisco: rv082 firmware; cisco: rv082; cisco: rv320 firmware; cisco: rv320; cisco: rv325 firmware; cisco: rv325

References