{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-05-12T20:55:28.728","vulnerabilities":[{"cve":{"id":"CVE-2021-40120","sourceIdentifier":"psirt@cisco.com","published":"2021-11-04T16:15:09.430","lastModified":"2024-11-21T06:23:36.870","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"A vulnerability in the web-based management interface of certain Cisco Small Business RV Series Routers could allow an authenticated, remote attacker with administrative privileges to inject arbitrary commands into the underlying operating system and execute them using root-level privileges. This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by sending malicious input to a specific field in the web-based management interface of an affected device. A successful exploit could allow the attacker to execute arbitrary commands on the underlying Linux operating system as a user with root-level privileges."},{"lang":"es","value":"Una vulnerabilidad en la interfaz de administración basada en la web de algunos routers de la serie RV de Cisco Small Business podría permitir a un atacante remoto autenticado con privilegios administrativos inyectar comandos arbitrarios en el sistema operativo subyacente y ejecutarlos usando privilegios de nivel de root. Esta vulnerabilidad es debido a que no se comprueba suficientemente la entrada proporcionada por el usuario. Un atacante podría explotar esta vulnerabilidad mediante el envío de una entrada maliciosa a un campo específico de la interfaz de administración basada en la web de un dispositivo afectado. Una explotación con éxito podría permitir al atacante ejecutar comandos arbitrarios en el sistema operativo Linux subyacente como un usuario con privilegios de nivel de root"}],"metrics":{"cvssMetricV31":[{"source":"psirt@cisco.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N","baseScore":6.5,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"HIGH","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"NONE"},"exploitabilityScore":1.2,"impactScore":5.2},{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","baseScore":7.2,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"HIGH","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":1.2,"impactScore":5.9}],"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:N/AC:L/Au:S/C:C/I:C/A:C","baseScore":9.0,"accessVector":"NETWORK","accessComplexity":"LOW","authentication":"SINGLE","confidentialityImpact":"COMPLETE","integrityImpact":"COMPLETE","availabilityImpact":"COMPLETE"},"baseSeverity":"HIGH","exploitabilityScore":8.0,"impactScore":10.0,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}]},"weaknesses":[{"source":"psirt@cisco.com","type":"Secondary","description":[{"lang":"en","value":"CWE-20"}]},{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-78"}]}],"configurations":[{"operator":"AND","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:cisco:ios_xr:4.2.3.06:*:*:*:*:*:*:*","matchCriteriaId":"4D9A5E39-C509-4C46-84C2-6EC81F87E920"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:rv016:-:*:*:*:*:*:*:*","matchCriteriaId":"701E3CF5-15C0-419A-97A8-9BD2C55D74AB"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:rv042:-:*:*:*:*:*:*:*","matchCriteriaId":"2DCBB2D8-AACF-45EA-B9D4-DAECC7C792D1"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:rv042g:-:*:*:*:*:*:*:*","matchCriteriaId":"F1CD7D9C-DDEF-4DF0-BCFB-A45301AE2C10"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:rv082:-:*:*:*:*:*:*:*","matchCriteriaId":"24FC4446-22C0-4EC9-84B4-A76412680105"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:rv320:-:*:*:*:*:*:*:*","matchCriteriaId":"7596F6D4-10DA-4F29-95AD-75B60F4670D6"},{"vulnerable":false,"criteria":"cpe:2.3:h:cisco:rv325:-:*:*:*:*:*:*:*","matchCriteriaId":"3435D601-EDA8-49FF-8841-EA6DF1518C75"}]}]},{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:cisco:application_extension_platform:1.5.1.13:*:*:*:*:*:*:*","matchCriteriaId":"31079AE3-0F4C-4DE1-BFD3-6694EFF54D70"}]}]}],"references":[{"url":"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sbrv-cmdinjection-Z5cWFdK","source":"psirt@cisco.com","tags":["Vendor Advisory"]},{"url":"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sbrv-cmdinjection-Z5cWFdK","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Vendor Advisory"]}]}}]}