CVE-2026-20206

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-20206", "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633", "state": "PUBLISHED", "assignerShortName": "cisco", "dateReserved": "2025-10-08T11:59:15.397Z", "datePublished": "2026-05-20T16:06:32.010Z", "dateUpdated": "2026-05-21T13:06:27.356Z"}, "containers": {"cna": {"title": "Cisco ThousandEyes BrowserBot Command Injection Vulnerability", "metrics": [{"format": "cvssV3_1", "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L", "baseScore": 6.3, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "LOW"}}], "descriptions": [{"lang": "en", "value": "A vulnerability in the BrowserBot component of Cisco ThousandEyes Enterprise Agent could have allowed an authenticated, remote attacker to execute arbitrary commands on Agents on behalf of the BrowserBot synthetics orchestration process. Cisco has addressed this vulnerability in the Cisco ThousandEyes Enterprise Agent, and no customer action is needed.\r\n\r\nThis vulnerability was due to insufficient input validation of command arguments that are supplied by the user. Prior to this vulnerability being addressed, an attacker could have exploited this vulnerability by authenticating to the ThousandEyes SaaS and submitting crafted input into the affected parameter. A successful exploit could have allowed the attacker to execute arbitrary commands within the BrowserBot container as the node user.\r\nTo exploit this vulnerability, the attacker must have valid user credentials for the ThousandEyes SaaS and the ability to manage transaction tests."}], "references": [{"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-tebbot-cmdinj-wN3yQ5gn", "name": "cisco-sa-tebbot-cmdinj-wN3yQ5gn"}], "exploits": [{"lang": "en", "value": "The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."}], "source": {"advisory": "cisco-sa-tebbot-cmdinj-wN3yQ5gn", "discovery": "EXTERNAL", "defects": ["CSCwt71150"]}, "problemTypes": [{"descriptions": [{"lang": "en", "description": "Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')", "type": "cwe", "cweId": "CWE-78"}]}], "affected": [{"vendor": "Cisco", "product": "Cisco ThousandEyes Enterprise Agent", "versions": [{"version": "Agent 5.0", "status": "affected"}, {"version": "Agent 4.4.4", "status": "affected"}, {"version": "Agent 4.4.3", "status": "affected"}, {"version": "Agent 4.4.2", "status": "affected"}, {"version": "Agent 4.2", "status": "affected"}, {"version": "Agent 4.1", "status": "affected"}, {"version": "Agent 4.0", "status": "affected"}, {"version": "Agent 5.1", "status": "affected"}, {"version": "Agent 5.1.2", "status": "affected"}, {"version": "Agent 5.1.3", "status": "affected"}], "defaultStatus": "unknown"}], "providerMetadata": {"orgId": "d1c1063e-7a18-46af-9102-31f8928bc633", "shortName": "cisco", "dateUpdated": "2026-05-20T16:06:32.010Z"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-05-21T03:55:35.778187Z", "id": "CVE-2026-20206", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-05-21T13:06:27.356Z"}}]}}

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{"affected": [{"affectedData": [{"defaultStatus": "unknown", "product": "Cisco ThousandEyes Enterprise Agent", "vendor": "Cisco", "versions": [{"status": "affected", "version": "Agent 5.0"}, {"status": "affected", "version": "Agent 4.4.4"}, {"status": "affected", "version": "Agent 4.4.3"}, {"status": "affected", "version": "Agent 4.4.2"}, {"status": "affected", "version": "Agent 4.2"}, {"status": "affected", "version": "Agent 4.1"}, {"status": "affected", "version": "Agent 4.0"}, {"status": "affected", "version": "Agent 5.1"}, {"status": "affected", "version": "Agent 5.1.2"}, {"status": "affected", "version": "Agent 5.1.3"}]}], "source": "psirt@cisco.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability in the BrowserBot component of Cisco ThousandEyes Enterprise Agent could have allowed an authenticated, remote attacker to execute arbitrary commands on Agents on behalf of the BrowserBot synthetics orchestration process. Cisco has addressed this vulnerability in the Cisco ThousandEyes Enterprise Agent, and no customer action is needed.\r\n\r\nThis vulnerability was due to insufficient input validation of command arguments that are supplied by the user. Prior to this vulnerability being addressed, an attacker could have exploited this vulnerability by authenticating to the ThousandEyes SaaS and submitting crafted input into the affected parameter. A successful exploit could have allowed the attacker to execute arbitrary commands within the BrowserBot container as the node user.\r\nTo exploit this vulnerability, the attacker must have valid user credentials for the ThousandEyes SaaS and the ability to manage transaction tests."}, {"lang": "es", "value": "Una vulnerabilidad en el componente BrowserBot de Cisco ThousandEyes Enterprise Agent podr\u00eda haber permitido a un atacante remoto autenticado ejecutar comandos arbitrarios en los Agents en nombre del proceso de orquestaci\u00f3n de sint\u00e9ticos de BrowserBot. Cisco ha abordado esta vulnerabilidad en el Cisco ThousandEyes Enterprise Agent, y no se requiere ninguna acci\u00f3n por parte del cliente.\n\nEsta vulnerabilidad se deb\u00eda a una validaci\u00f3n de entrada insuficiente de los argumentos de comando que son proporcionados por el usuario. Antes de que esta vulnerabilidad fuera abordada, un atacante podr\u00eda haber explotado esta vulnerabilidad autentic\u00e1ndose en el ThousandEyes SaaS y enviando una entrada manipulada en el par\u00e1metro afectado. Un exploit exitoso podr\u00eda haber permitido al atacante ejecutar comandos arbitrarios dentro del contenedor BrowserBot como el usuario 'node'.\nPara explotar esta vulnerabilidad, el atacante debe tener credenciales de usuario v\u00e1lidas para el ThousandEyes SaaS y la capacidad de gestionar pruebas de transacciones."}], "id": "CVE-2026-20206", "lastModified": "2026-07-23T12:10:00.110", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 6.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.4, "source": "psirt@cisco.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-20206", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-05-21T03:55:35.778187Z", "version": "2.0.3"}}]}, "published": "2026-05-20T17:16:20.243", "references": [{"source": "psirt@cisco.com", "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-tebbot-cmdinj-wN3yQ5gn"}], "sourceIdentifier": "psirt@cisco.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-78"}], "source": "psirt@cisco.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "Agent 5.0"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "Agent 4.4.4"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "Agent 4.4.3"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "Agent 4.4.2"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "Agent 4.2"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "Agent 4.1"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "Agent 4.0"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "Agent 5.1"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "Agent 5.1.2"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "Agent 5.1.3"}}], "enrichment": {"confidence": 92.0, "confidence_source": "matching", "scores": [{"score": 92.0, "source": "matching"}]}, "original": {"product": "Cisco ThousandEyes Enterprise Agent", "source": "cna", "vendor": "Cisco"}, "product": "thousandeyes_enterprise_agent", "vendor": "cisco"}], "created": "2026-05-20T18:00:14.210283+00:00", "updated": "2026-05-21T08:15:06.056375+00:00", "vendors": ["cisco", "cisco$PRODUCT$thousandeyes_enterprise_agent"]}