FKIE_CVE-2026-20246
Vulnerability from fkie_nvd - Published: 2026-06-17 17:16 - Updated: 2026-10-26 11:10
Severity
Summary
A vulnerability in the vmadmin CLI of Cisco Umbrella Virtual Appliance could allow an authenticated, local attacker to elevate privileges on an affected device.
This vulnerability is due to insufficient validation of user-supplied commands. An attacker with vmadmin privileges could exploit this vulnerability by using certain commands at the CLI. A successful exploit could allow the attacker to elevate privileges to root.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| cisco | umbrella_virtual_appliance | * |
{
"affected": [
{
"affectedData": [
{
"defaultStatus": "unknown",
"product": "Cisco Umbrella Insights Virtual Appliance",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "2.6.0"
},
{
"status": "affected",
"version": "2.5.6"
},
{
"status": "affected",
"version": "2.5"
},
{
"status": "affected",
"version": "2.4.12"
},
{
"status": "affected",
"version": "2.7"
},
{
"status": "affected",
"version": "2.6.2"
},
{
"status": "affected",
"version": "2.5.5"
},
{
"status": "affected",
"version": "2.5.4"
},
{
"status": "affected",
"version": "2.8"
},
{
"status": "affected",
"version": "2.6.1"
},
{
"status": "affected",
"version": "2.5.7"
},
{
"status": "affected",
"version": "1.5.4"
},
{
"status": "affected",
"version": "1.5.5"
},
{
"status": "affected",
"version": "1.5.6"
},
{
"status": "affected",
"version": "2.0.0"
},
{
"status": "affected",
"version": "2.0.2"
},
{
"status": "affected",
"version": "2.0.3"
},
{
"status": "affected",
"version": "2.1.0"
},
{
"status": "affected",
"version": "2.1.2"
},
{
"status": "affected",
"version": "2.1.4"
},
{
"status": "affected",
"version": "2.1.5"
},
{
"status": "affected",
"version": "2.2"
},
{
"status": "affected",
"version": "2.2.1"
},
{
"status": "affected",
"version": "2.3"
},
{
"status": "affected",
"version": "2.3.1"
},
{
"status": "affected",
"version": "2.4"
},
{
"status": "affected",
"version": "2.4.4"
},
{
"status": "affected",
"version": "2.4.6"
},
{
"status": "affected",
"version": "2.8.9"
},
{
"status": "affected",
"version": "3.0"
},
{
"status": "affected",
"version": "3.1"
},
{
"status": "affected",
"version": "3.2"
},
{
"status": "affected",
"version": "2.8.1"
},
{
"status": "affected",
"version": "2.8.2"
},
{
"status": "affected",
"version": "2.8.3"
},
{
"status": "affected",
"version": "2.8.4"
},
{
"status": "affected",
"version": "2.8.5"
},
{
"status": "affected",
"version": "3.0.1"
},
{
"status": "affected",
"version": "3.0.2"
},
{
"status": "affected",
"version": "3.0.4"
},
{
"status": "affected",
"version": "3.0.5"
},
{
"status": "affected",
"version": "3.1.1"
},
{
"status": "affected",
"version": "3.1.2"
},
{
"status": "affected",
"version": "3.1.3"
},
{
"status": "affected",
"version": "3.1.4"
},
{
"status": "affected",
"version": "3.2.1"
},
{
"status": "affected",
"version": "3.2.2"
},
{
"status": "affected",
"version": "3.2.3"
},
{
"status": "affected",
"version": "3.3"
},
{
"status": "affected",
"version": "3.3.1"
},
{
"status": "affected",
"version": "3.3.2"
},
{
"status": "affected",
"version": "3.3.3"
},
{
"status": "affected",
"version": "3.3.4"
},
{
"status": "affected",
"version": "3.4"
},
{
"status": "affected",
"version": "3.4.1"
},
{
"status": "affected",
"version": "3.4.2"
},
{
"status": "affected",
"version": "3.4.3"
},
{
"status": "affected",
"version": "3.4.4"
},
{
"status": "affected",
"version": "3.4.5"
},
{
"status": "affected",
"version": "3.4.6"
},
{
"status": "affected",
"version": "3.5"
},
{
"status": "affected",
"version": "2.7.1"
},
{
"status": "affected",
"version": "2.7.2"
},
{
"status": "affected",
"version": "2.7.6"
},
{
"status": "affected",
"version": "2.7.9"
},
{
"status": "affected",
"version": "2.7.10"
},
{
"status": "affected",
"version": "3.5.1"
},
{
"status": "affected",
"version": "3.5.2"
},
{
"status": "affected",
"version": "3.6.1"
},
{
"status": "affected",
"version": "3.6.2"
},
{
"status": "affected",
"version": "3.7"
},
{
"status": "affected",
"version": "3.7.1"
},
{
"status": "affected",
"version": "3.8.3"
}
]
}
],
"source": "psirt@cisco.com"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:cisco:umbrella_virtual_appliance:*:*:*:*:*:*:*:*",
"matchCriteriaId": "747DFEB4-0F17-4600-8E22-ECB545A12EE8",
"versionEndExcluding": "3.8.5",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "A vulnerability in the vmadmin CLI of Cisco Umbrella Virtual Appliance could allow an authenticated, local attacker to elevate privileges on an affected device.\r\n\r\nThis vulnerability is due to insufficient validation of user-supplied commands. An attacker with vmadmin privileges could exploit this vulnerability by using certain commands at the CLI. A successful exploit could allow the attacker to elevate privileges to root."
},
{
"lang": "es",
"value": "Una vulnerabilidad en la CLI vmadmin de Cisco Umbrella Virtual Appliance podr\u00eda permitir a un atacante local autenticado elevar privilegios en un dispositivo afectado.\n\nEsta vulnerabilidad se debe a una validaci\u00f3n insuficiente de los comandos proporcionados por el usuario. Un atacante con privilegios vmadmin podr\u00eda explotar esta vulnerabilidad utilizando ciertos comandos en la CLI. Un exploit exitoso podr\u00eda permitir al atacante elevar privilegios a root."
}
],
"id": "CVE-2026-20246",
"lastModified": "2026-10-26T11:10:00.157",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "NONE",
"baseScore": 6.0,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "HIGH",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N",
"version": "3.1"
},
"exploitabilityScore": 0.8,
"impactScore": 5.2,
"source": "psirt@cisco.com",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-20246",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-06-17T17:15:44.900787Z",
"version": "2.0.3"
}
}
]
},
"published": "2026-06-17T17:16:43.423",
"references": [
{
"source": "psirt@cisco.com",
"tags": [
"Vendor Advisory"
],
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-umbrella-priv-esc-F4wJB7AU"
}
],
"sourceIdentifier": "psirt@cisco.com",
"vulnStatus": "Analyzed",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-269"
}
],
"source": "psirt@cisco.com",
"type": "Secondary"
}
]
}
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Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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