CVE-2026-20029
Full vulnerability record from the local CVENow database.
Description
A vulnerability in the licensing features of Cisco Identity Services Engine (ISE) and Cisco ISE Passive Identity Connector (ISE-PIC) could allow an authenticated, remote attacker with administrative privileges to gain access to sensitive information. This vulnerability is due to improper parsing of XML that is processed by the web-based management interface of Cisco ISE and Cisco ISE-PIC. An attacker could exploit this vulnerability by uploading a malicious file to the application. A successful exploit could allow the attacker to read arbitrary files from the underlying operating system that could include sensitive data that should otherwise be inaccessible even to administrators. To exploit this vulnerability, the attacker must have valid administrative credentials.
Severity
MEDIUM
CVSS score
4.9
(v3.1)
Vulnerability status
Deferred
Source identifier
Published
2026-01-07 17:16:03.067000
Last modified
2026-10-26 22:10:00.163000
View original CVE JSON
{
"id": "CVE-2026-20029",
"sourceIdentifier": "[email protected]",
"published": "2026-01-07T17:16:03.067",
"lastModified": "2026-10-26T22:10:00.163",
"vulnStatus": "Deferred",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "A vulnerability in the licensing features of Cisco Identity Services Engine (ISE) and Cisco ISE Passive Identity Connector (ISE-PIC) could allow an authenticated, remote attacker with administrative privileges to gain access to sensitive information. \r\n\r\nThis vulnerability is due to improper parsing of XML that is processed by the web-based management interface of Cisco ISE and Cisco ISE-PIC. An attacker could exploit this vulnerability by uploading a malicious file to the application. A successful exploit could allow the attacker to read arbitrary files from the underlying operating system that could include sensitive data that should otherwise be inaccessible even to administrators. To exploit this vulnerability, the attacker must have valid administrative credentials."
},
{
"lang": "es",
"value": "Una vulnerabilidad en las características de licenciamiento de Cisco Identity Services Engine (ISE) y Cisco ISE Passive Identity Connector (ISE-PIC) podría permitir a un atacante remoto autenticado con privilegios administrativos obtener acceso a información sensible.\n\nEsta vulnerabilidad se debe a un análisis incorrecto de XML que es procesado por la interfaz de gestión basada en web de Cisco ISE y Cisco ISE-PIC. Un atacante podría explotar esta vulnerabilidad al cargar un archivo malicioso en la aplicación. Un exploit exitoso podría permitir al atacante leer archivos arbitrarios del sistema operativo subyacente que podrían incluir datos sensibles que de otro modo deberían ser inaccesibles incluso para los administradores. Para explotar esta vulnerabilidad, el atacante debe tener credenciales administrativas válidas."
}
],
"affected": [
{
"source": "[email protected]",
"affectedData": [
{
"vendor": "Cisco",
"product": "Cisco Identity Services Engine Software",
"defaultStatus": "unknown",
"versions": [
{
"version": "3.1.0",
"status": "affected"
},
{
"version": "3.1.0 p1",
"status": "affected"
},
{
"version": "3.1.0 p3",
"status": "affected"
},
{
"version": "3.1.0 p2",
"status": "affected"
},
{
"version": "3.2.0",
"status": "affected"
},
{
"version": "3.1.0 p4",
"status": "affected"
},
{
"version": "3.1.0 p5",
"status": "affected"
},
{
"version": "3.2.0 p1",
"status": "affected"
},
{
"version": "3.1.0 p6",
"status": "affected"
},
{
"version": "3.2.0 p2",
"status": "affected"
},
{
"version": "3.1.0 p7",
"status": "affected"
},
{
"version": "3.3.0",
"status": "affected"
},
{
"version": "3.2.0 p3",
"status": "affected"
},
{
"version": "3.2.0 p4",
"status": "affected"
},
{
"version": "3.1.0 p8",
"status": "affected"
},
{
"version": "3.2.0 p5",
"status": "affected"
},
{
"version": "3.2.0 p6",
"status": "affected"
},
{
"version": "3.1.0 p9",
"status": "affected"
},
{
"version": "3.3 Patch 2",
"status": "affected"
},
{
"version": "3.3 Patch 1",
"status": "affected"
},
{
"version": "3.3 Patch 3",
"status": "affected"
},
{
"version": "3.4.0",
"status": "affected"
},
{
"version": "3.2.0 p7",
"status": "affected"
},
{
"version": "3.3 Patch 4",
"status": "affected"
},
{
"version": "3.4 Patch 1",
"status": "affected"
},
{
"version": "3.1.0 p10",
"status": "affected"
},
{
"version": "3.3 Patch 5",
"status": "affected"
},
{
"version": "3.3 Patch 6",
"status": "affected"
},
{
"version": "3.4 Patch 2",
"status": "affected"
},
{
"version": "3.3 Patch 7",
"status": "affected"
},
{
"version": "3.4 Patch 3",
"status": "affected"
}
]
}
]
}
],
"metrics": {
"cvssMetricV31": [
{
"source": "[email protected]",
"type": "Secondary",
"cvssData": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N",
"baseScore": 4.9,
"baseSeverity": "MEDIUM",
"attackVector": "NETWORK",
"attackComplexity": "LOW",
"privilegesRequired": "HIGH",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"availabilityImpact": "NONE"
},
"exploitabilityScore": 1.2,
"impactScore": 3.6
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"timestamp": "2026-01-07T16:40:33.564050Z",
"id": "CVE-2026-20029",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
]
},
"weaknesses": [
{
"source": "[email protected]",
"type": "Secondary",
"description": [
{
"lang": "en",
"value": "CWE-611"
}
]
}
],
"references": [
{
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-xxe-jWSbSDKt",
"source": "[email protected]"
}
]
}