November 13, 2026 Follow Egret
CVE-2023-20118 · CVE record: PUBLISHED

Cisco Small Business RV Series Routers Command Injection Vulnerability

Cisco Cisco Small Business RV Series Router 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"])}]]

Exploitation evidence

Known exploited · CISA KEV listed

Added 2025-03-03. Ransomware campaign use: Unknown.

CISA 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.

CISA due date: 2025-03-24. This is the catalog’s deadline, not an assessment of your organization’s exposure.

KEV checked 13 Nov 2026, 00:20 Jerusalem · Original catalog ↗

Reported products and versions

Cisco / Cisco Small Business RV Series Router Firmware

Default status: Not specified

  • affected: 1.0.1.17
  • affected: 1.0.2.03
  • affected: 1.1.0.09
  • affected: 1.1.1.19
  • affected: 1.1.1.06
  • affected: 1.2.1.13
  • affected: 1.2.1.14
  • affected: 1.3.1.12
  • affected: 1.3.2.02
  • affected: 1.3.1.10
  • affected: 1.4.2.15
  • affected: 1.4.2.17
  • affected: 1.4.2.19
  • affected: 1.4.2.20
  • affected: 1.4.2.22
  • affected: 1.5.1.05
  • affected: 1.5.1.11
  • affected: 1.5.1.13

Fixes and workarounds

No explicit solution text in the downloaded CVE record. Consult the vendor advisory; unaffected version ranges are shown above as reported, not inferred as a patch recommendation.

Sources and related reporting

CVE Program record ↗ · Download tracked evidence as JSON

Observed change timeline

History begins when Egret first downloads each source. It is not the complete upstream CVE history.

12 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-12",
  "epss": 0.54107,
  "percentile": 0.99022
}
10 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-10",
  "epss": 0.54107,
  "percentile": 0.99015
}
09 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-09",
  "epss": 0.54107,
  "percentile": 0.99014
}
08 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-08",
  "epss": 0.54107,
  "percentile": 0.99014
}
07 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-07",
  "epss": 0.54107,
  "percentile": 0.99013
}
06 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-06",
  "epss": 0.54107,
  "percentile": 0.99012
}
06 Nov 2026, 06:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-05",
  "epss": 0.54107,
  "percentile": 0.99011
}
05 Nov 2026, 00:20 Jerusalem · CVE Program record changed

Stored CNA snapshot at this observation.

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T08:57:35.886Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "cisco-sa-sbr042-multi-vuln-ej76Pke5",
            "tags": [
              "x_transferred"
            ],
            "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sbr042-multi-vuln-ej76Pke5"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2023-20118",
                "options": [
                  {
                    "Exploitation": "active"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-03-03T20:12:24.673297Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          },
          {
            "other": {
              "content": {
                "dateAdded": "2025-03-03",
                "reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-20118"
              },
              "type": "kev"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-10-21T23:15:20.900Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "government-resource"
            ],
            "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-20118"
          }
        ],
        "timeline": [
          {
            "lang": "en",
            "time": "2025-03-03T00:00:00.000Z",
            "value": "CVE-2023-20118 added to CISA KEV"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Cisco Small Business RV Series Router Firmware",
          "vendor": "Cisco",
          "versions": [
            {
              "status": "affected",
              "version": "1.0.1.17"
            },
            {
              "status": "affected",
              "version": "1.0.2.03"
            },
            {
              "status": "affected",
              "version": "1.1.0.09"
            },
            {
              "status": "affected",
              "version": "1.1.1.19"
            },
            {
              "status": "affected",
              "version": "1.1.1.06"
            },
            {
              "status": "affected",
              "version": "1.2.1.13"
            },
            {
              "status": "affected",
              "version": "1.2.1.14"
            },
            {
              "status": "affected",
              "version": "1.3.1.12"
            },
            {
              "status": "affected",
              "version": "1.3.2.02"
            },
            {
              "status": "affected",
              "version": "1.3.1.10"
            },
            {
              "status": "affected",
              "version": "1.4.2.15"
            },
            {
              "status": "affected",
              "version": "1.4.2.17"
            },
            {
              "status": "affected",
              "version": "1.4.2.19"
            },
            {
              "status": "affected",
              "version": "1.4.2.20"
            },
            {
              "status": "affected",
              "version": "1.4.2.22"
            },
            {
              "status": "affected",
              "version": "1.5.1.05"
            },
            {
              "status": "affected",
              "version": "1.5.1.11"
            },
            {
              "status": "affected",
              "version": "1.5.1.13"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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.\r\n\r 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.\r\n\r 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.\r\n\r  {{value}} [\"%7b%7bvalue%7d%7d\"])}]]"
        }
      ],
      "exploits": [
        {
          "lang": "en",
          "value": "The Cisco Product Security Incident Response Team (PSIRT) is aware that proof-of-concept exploit code is available for vulnerabilities CVE-2023-20025 and CVE-2023-20026 that are described in this advisory.\r\n\r\nIn March 2025, the Cisco PSIRT became aware of additional attempted exploitation of some of these vulnerabilities in the wild. Cisco continues to strongly recommend that customers upgrade their hardware to Meraki or Cisco 1000 Series Integrated Services Routers to remediate these vulnerabilities."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "HIGH",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N",
            "version": "3.1"
          },
          "format": "cvssV3_1"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-77",
              "description": "Improper Neutralization of Special Elements used in a Command ('Command Injection')",
              "lang": "en",
              "type": "cwe"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-03-12T16:21:05.953Z",
        "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
        "shortName": "cisco"
      },
      "references": [
        {
          "name": "cisco-sa-sbr042-multi-vuln-ej76Pke5",
          "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sbr042-multi-vuln-ej76Pke5"
        }
      ],
      "source": {
        "advisory": "cisco-sa-sbr042-multi-vuln-ej76Pke5",
        "defects": [
          "CSCwe41652"
        ],
        "discovery": "EXTERNAL"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
    "assignerShortName": "cisco",
    "cveId": "CVE-2023-20118",
    "datePublished": "2023-04-05T16:05:41.067Z",
    "dateReserved": "2022-10-27T18:47:50.345Z",
    "dateUpdated": "2025-10-21T23:15:20.900Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}
04 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-04",
  "epss": 0.54107,
  "percentile": 0.9901
}
03 Nov 2026, 18:20 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-03",
  "epss": 0.54107,
  "percentile": 0.99009
}
03 Nov 2026, 02:22 Jerusalem · EPSS observation updated

Stored EPSS snapshot at this observation.

{
  "date": "2026-11-02",
  "epss": 0.54107,
  "percentile": 0.99007
}
03 Nov 2026, 02:22 Jerusalem · CISA KEV status changed

Stored KEV snapshot at this observation.

{
  "cveID": "CVE-2023-20118",
  "cwes": [
    "CWE-77"
  ],
  "dateAdded": "2025-03-03",
  "dueDate": "2025-03-24",
  "forensicTriage": "No",
  "knownRansomwareCampaignUse": "Unknown",
  "notes": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sbr042-multi-vuln-ej76Pke5 ; https://nvd.nist.gov/vuln/detail/CVE-2023-20118",
  "product": "Small Business RV Series Routers",
  "requiredAction": "Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.",
  "shortDescription": "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.",
  "vendorProject": "Cisco",
  "vulnerabilityName": "Cisco Small Business RV Series Routers Command Injection Vulnerability"
}
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