{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-05-06T03:07:56.174","vulnerabilities":[{"cve":{"id":"CVE-2021-34715","sourceIdentifier":"psirt@cisco.com","published":"2021-08-18T20:15:07.150","lastModified":"2024-11-21T06:11:02.033","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"A vulnerability in the image verification function of Cisco Expressway Series and Cisco TelePresence Video Communication Server (VCS) could allow an authenticated, remote attacker to execute code with internal user privileges on the underlying operating system. The vulnerability is due to insufficient validation of the content of upgrade packages. An attacker could exploit this vulnerability by uploading a malicious archive to the Upgrade page of the administrative web interface. A successful exploit could allow the attacker to execute code with user-level privileges (the _nobody account) on the underlying operating system."},{"lang":"es","value":"Una vulnerabilidad en la función de comprobación de imagen de Cisco Expressway Series y Cisco TelePresence Video Communication Server (VCS) podría permitir a un atacante autenticado remoto ejecutar código con privilegios de usuario interno en el sistema operativo subyacente. La vulnerabilidad es debido a que no se comprueba suficientemente el contenido de los paquetes de actualización. Un atacante podría explotar esta vulnerabilidad cargando un archivo malicioso en la página de actualización de la interfaz web administrativa. Una explotación con éxito podría permitir al atacante ejecutar código con privilegios de nivel de usuario (cuenta the _nobody) en el sistema operativo subyacente."}],"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:L/I:L/A:L","baseScore":4.7,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"HIGH","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"LOW"},"exploitabilityScore":1.2,"impactScore":3.4},{"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-347"}]},{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-347"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:cisco:expressway:*:*:*:*:*:*:*:*","versionEndIncluding":"x8.8.0","matchCriteriaId":"5DE7016D-2F6F-410F-B9A4-946E6A30F871"},{"vulnerable":true,"criteria":"cpe:2.3:a:cisco:telepresence_video_communication_server:*:*:*:*:*:*:*:*","versionEndIncluding":"x8.8","matchCriteriaId":"93C89023-B05D-4E49-ABAD-993C0D5A0357"}]}]}],"references":[{"url":"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ewver-c6WZPXRx","source":"psirt@cisco.com","tags":["Patch","Vendor Advisory"]},{"url":"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ewver-c6WZPXRx","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch","Vendor Advisory"]}]}}]}