CVE-2026-20112

A vulnerability in the web-based Cisco IOx application hosting environment management interface of Cisco IOS XE Software could allow an authenticated, remote attacker to conduct a stored cross-site scripting (XSS) attack against a user of the web-based management interface of an affected device. This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by injecting malicious code into specific pages of the interface. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information. To exploit this vulnerability, the attacker must have valid administrative credentials.

CVSS v3 4.8 MEDIUM

4.8^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.7 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required HIGH

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iox-xss-LpGkzwtJ

Configurations

No configuration.

History

No history.

Information

Published : 2026-03-25 16:16

Updated : 2026-06-17 10:17

NVD link : CVE-2026-20112

Mitre link : CVE-2026-20112

CVE.ORG link : CVE-2026-20112

JSON object : View

Products Affected

No product.

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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{"status": "affected", "version": "16.6.2"}, {"status": "affected", "version": "16.6.3"}, {"status": "affected", "version": "16.6.4"}, {"status": "affected", "version": "16.6.5"}, {"status": "affected", "version": "16.6.4a"}, {"status": "affected", "version": "16.6.5a"}, {"status": "affected", "version": "16.6.6"}, {"status": "affected", "version": "16.6.7"}, {"status": "affected", "version": "16.6.8"}, {"status": "affected", "version": "16.6.9"}, {"status": "affected", "version": "16.6.10"}, {"status": "affected", "version": "16.7.1"}, {"status": "affected", "version": "16.7.1a"}, {"status": "affected", "version": "16.7.1b"}, {"status": "affected", "version": "16.7.2"}, {"status": "affected", "version": "16.7.3"}, {"status": "affected", "version": "16.7.4"}, {"status": "affected", "version": "16.8.1"}, {"status": "affected", "version": "16.8.1a"}, {"status": "affected", "version": "16.8.1b"}, {"status": "affected", "version": "16.8.1s"}, {"status": "affected", "version": "16.8.1c"}, 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"version": "17.12.5d"}, {"status": "affected", "version": "17.12.1z5"}, {"status": "affected", "version": "17.12.1z6"}, {"status": "affected", "version": "17.12.6b"}, {"status": "affected", "version": "17.13.1"}, {"status": "affected", "version": "17.13.1a"}, {"status": "affected", "version": "17.14.1"}, {"status": "affected", "version": "17.14.1a"}, {"status": "affected", "version": "17.15.1"}, {"status": "affected", "version": "17.15.1w"}, {"status": "affected", "version": "17.15.1a"}, {"status": "affected", "version": "17.15.2"}, {"status": "affected", "version": "17.15.1b"}, {"status": "affected", "version": "17.15.1x"}, {"status": "affected", "version": "17.15.1z"}, {"status": "affected", "version": "17.15.3"}, {"status": "affected", "version": "17.15.2c"}, {"status": "affected", "version": "17.15.2a"}, {"status": "affected", "version": "17.15.1y"}, {"status": "affected", "version": "17.15.2b"}, {"status": "affected", "version": "17.15.3a"}, {"status": "affected", "version": "17.15.4"}, {"status": "affected", "version": "17.15.3b"}, {"status": "affected", "version": "17.15.4d"}, {"status": "affected", "version": "17.15.4e"}, {"status": "affected", "version": "17.16.1"}, {"status": "affected", "version": "17.16.1a"}, {"status": "affected", "version": "17.17.1"}, {"status": "affected", "version": "17.18.1"}, {"status": "affected", "version": "17.18.1w"}, {"status": "affected", "version": "17.18.1a"}]}]}], "published": "2026-03-25T16:16:15.140", "references": [{"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iox-xss-LpGkzwtJ", "source": "psirt@cisco.com"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "psirt@cisco.com", "description": [{"lang": "en", "value": "CWE-79"}]}], "descriptions": [{"lang": "en", "value": "A vulnerability in the web-based Cisco IOx application hosting environment management interface of Cisco IOS XE Software could allow an authenticated, remote attacker to conduct a stored cross-site scripting (XSS) attack against a user of the web-based management interface of an affected device.\r\n\r This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by injecting malicious code into specific pages of the interface. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information. To exploit this vulnerability, the attacker must have valid administrative credentials."}, {"lang": "es", "value": "Una vulnerabilidad en la interfaz de gesti\u00f3n del entorno de alojamiento de aplicaciones Cisco IOx basada en web del software Cisco IOS XE podr\u00eda permitir a un atacante remoto autenticado realizar un ataque de cross-site scripting (XSS) almacenado contra un usuario de la interfaz de gesti\u00f3n basada en web de un dispositivo afectado. Esta vulnerabilidad se debe a una validaci\u00f3n insuficiente de la entrada proporcionada por el usuario. Un atacante podr\u00eda explotar esta vulnerabilidad inyectando c\u00f3digo malicioso en p\u00e1ginas espec\u00edficas de la interfaz. Un exploit exitoso podr\u00eda permitir al atacante ejecutar c\u00f3digo de script arbitrario en el contexto de la interfaz afectada o acceder a informaci\u00f3n sensible basada en el navegador. Para explotar esta vulnerabilidad, el atacante debe tener credenciales administrativas v\u00e1lidas."}], "lastModified": "2026-06-17T10:17:07.890", "sourceIdentifier": "psirt@cisco.com"}