CVE-2026-20037

A vulnerability in the NX-OS CLI privilege levels of Cisco UCS Manager Software could allow an authenticated, local attacker with read-only privileges to modify files and perform unauthorized actions on an affected system.   This vulnerability exists because unnecessary privileges are given to the user. An attacker could exploit this vulnerability by authenticating to a device as a read-only user and connecting to the NX-OS CLI. A successful exploit could allow the attacker to create or overwrite files in the file system or perform limited privileged actions on an affected device.   

CVSS v3 4.4 MEDIUM

4.4^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 2.5

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ucsm-afwae-mOgUfyLn

Configurations

No configuration.

History

No history.

Information

Published : 2026-02-25 17:25

Updated : 2026-02-27 14:06

NVD link : CVE-2026-20037

Mitre link : CVE-2026-20037

CVE.ORG link : CVE-2026-20037

JSON object : View

Products Affected

No product.

CWE

CWE-250

Execution with Unnecessary Privileges

{"id": "CVE-2026-20037", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "psirt@cisco.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 4.4, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "LOW"}, "impactScore": 2.5, "exploitabilityScore": 1.8}]}, "published": "2026-02-25T17:25:25.190", "references": [{"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ucsm-afwae-mOgUfyLn", "source": "psirt@cisco.com"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Primary", "source": "psirt@cisco.com", "description": [{"lang": "en", "value": "CWE-250"}]}], "descriptions": [{"lang": "en", "value": "A vulnerability in the NX-OS CLI privilege levels of Cisco UCS Manager Software could allow an authenticated, local attacker with read-only privileges to modify files and perform unauthorized actions on an affected system.\r\n \r\nThis vulnerability exists because unnecessary privileges are given to the user. An attacker could exploit this vulnerability by authenticating to a device as a read-only user and connecting to the NX-OS CLI. A successful exploit could allow the attacker to create or overwrite files in the file system or perform limited privileged actions on an affected device.   "}, {"lang": "es", "value": "Una vulnerabilidad en los niveles de privilegio de la CLI de NX-OS del software Cisco UCS Manager podr\u00eda permitir a un atacante local y autenticado con privilegios de solo lectura modificar archivos y realizar acciones no autorizadas en un sistema afectado.\n\nEsta vulnerabilidad existe porque se otorgan privilegios innecesarios al usuario. Un atacante podr\u00eda explotar esta vulnerabilidad autentic\u00e1ndose en un dispositivo como un usuario de solo lectura y conect\u00e1ndose a la CLI de NX-OS. Un exploit exitoso podr\u00eda permitir al atacante crear o sobrescribir archivos en el sistema de archivos o realizar acciones privilegiadas limitadas en un dispositivo afectado."}], "lastModified": "2026-02-27T14:06:59.787", "sourceIdentifier": "psirt@cisco.com"}