CVE-2023-20118

Cisco Small Business RV Series Routers Command Injection

6.5 MEDIUMActively exploited (CISA KEV)EPSS 54.1%

Published13 Apr 2023
Added to CISA KEV3 Mar 2025
Remediation due24 Mar 2025

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"])}]]

CVSS 3.1 breakdown

Attack vectorNetwork

Attack complexityLow

Privileges requiredHigh

User interactionNone

ScopeUnchanged

ConfidentialityHigh

IntegrityHigh

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

Affected products

Cisco Rv016 Firmwareall versions

Cisco Rv042 Firmwareall versions

Cisco Rv042g Firmwareall versions

Cisco Rv082 Firmwareall versions

Cisco Rv320 Firmwareall versions

Cisco Rv325 Firmwareall versions

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

Patch & vendor advisories

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sbr042-multi-vuln-ej76Pke5

References

https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sbr042-multi-vuln-ej76Pke5MitigationVendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-20118US Government Resource

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

Frequently asked

Is CVE-2023-20118 being actively exploited?

Yes. CVE-2023-20118 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 3 Mar 2025.

How severe is CVE-2023-20118?

CVE-2023-20118 has a CVSS 3.1 base score of 6.5, rated medium. EPSS estimates a 54.1% probability of exploitation.

Which products are affected by CVE-2023-20118?

Affected products include Cisco Rv016 Firmware, Cisco Rv042 Firmware, Cisco Rv042g Firmware, Cisco Rv082 Firmware, Cisco Rv320 Firmware, and 1 more.

How do I fix CVE-2023-20118?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2023-20118 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, a risk for it never ranks below high, and the update that fixes it moves to the Emergency patch lane. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

See how prioritisation works Book a demo

Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.