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Vulnerabilities

Vulnerability · CVE-2023-20118

Cisco Small Business RV Series Routers Command Injection Vulnerability

Published Apr 13, 2023 · catalog updated Jun 16, 2026 · Cisco Small Business RV Series Routers

Patch now

CVE-2023-20118 is in the CISA known-exploited catalog, due Mar 24, 2025. Confirm Cisco Small Business RV Series Routers against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
Severity
High7.2
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
54.11%
Remediation
Remediation guidance
Affected products
cpe cisco/rv016 firmware · cpe cisco/rv042 firmware · cpe cisco/rv042g firmware · cpe cisco/rv082 firmware · cpe cisco/rv320 firmware · cpe cisco/rv325 firmware

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"])}]]

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe cisco/rv016 firmwareversion unspecified
  • cpe cisco/rv042 firmwareversion unspecified
  • cpe cisco/rv042g firmwareversion unspecified
  • cpe cisco/rv082 firmwareversion unspecified
  • cpe cisco/rv320 firmwareversion unspecified
  • cpe cisco/rv325 firmwareversion unspecified
  • vendor Cisco Small Business RV Series Routersversion unspecified

How to fix CVE-2023-20118

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2023-20118 is in the CISA known-exploited catalog, due Mar 24, 2025. Confirm Cisco Small Business RV Series Routers against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Affected version ranges are not on this record. Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

What should an analyst verify?

CWE-77: Command Injection. EPSS 54.11%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Cisco security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Apr 13, 2023 · Catalog

    Detected

    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 HT

  2. Mar 3, 2025 · CISA KEV

    Known exploited

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

  3. Mar 24, 2025 · CISA KEV

    Remediation due

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

  4. Jun 16, 2026 · Catalog

    Updated

    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 HT

Sources

  • CISA KEVConfirmed exploitationCVE-2023-20118

    Multiple Cisco Small Business RV Series Routers contains a command injection vulnerability in the web-based management interface. Successful exploitation could allow an authenticated, remote attacker to gain root-level privileges and access unauthorized data.

    cisa.gov
  • CVE.orgVulnerability recordCVE-2023-20118

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2023-20118

    30-day exploitation probability 54.1%

    first.org
  • NIST NVDVulnerability recordCVE-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

    nvd.nist.gov
  • VulnCheck KEVConfirmed exploitationCVE-2023-20118

    Multiple Cisco Small Business RV Series Routers contains a command injection vulnerability in the web-based management interface. Successful exploitation could allow an authenticated, remote attacker to gain root-level privileges and access unauthorized data.

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.