CVE-2026-20304
Full vulnerability record from the local CVENow database.
Description
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Catalyst SD-WAN engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening release that address multiple internally discovered vulnerabilities. The vulnerabilities tracked by CVE-2026-20304 are related to improper access control issues that are grouped under the Common Weakness Enumeration (CWE) CWE-284.
Severity
CRITICAL
CVSS score
9.9
(v3.1)
Vulnerability status
Awaiting Analysis
Source identifier
Published
2026-08-05 17:16:50.890000
Last modified
2026-10-23 21:10:00.157000
View original CVE JSON
{
"id": "CVE-2026-20304",
"sourceIdentifier": "[email protected]",
"published": "2026-08-05T17:16:50.890",
"lastModified": "2026-10-23T21:10:00.157",
"vulnStatus": "Awaiting Analysis",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Catalyst SD-WAN engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening release that address multiple internally discovered vulnerabilities.\r\n\r\nThe vulnerabilities tracked by CVE-2026-20304 are related to improper access control issues that are grouped under the Common Weakness Enumeration (CWE) CWE-284."
},
{
"lang": "es",
"value": "Como parte del compromiso continuo de Cisco con la seguridad proactiva y la calidad del producto, el equipo de ingeniería de Cisco Catalyst SD-WAN ha llevado a cabo una revisión de seguridad interna exhaustiva. Esta revisión resultó en una versión de endurecimiento de software que aborda múltiples vulnerabilidades descubiertas internamente.\n\nLas vulnerabilidades rastreadas por CVE-2026-20304 están relacionadas con problemas de control de acceso inadecuado que se agrupan bajo la Enumeración de Debilidades Comunes (CWE) CWE-284."
}
],
"affected": [
{
"source": "[email protected]",
"affectedData": [
{
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]
}
],
"metrics": {
"cvssMetricV31": [
{
"source": "[email protected]",
"type": "Secondary",
"cvssData": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
"baseScore": 9.9,
"baseSeverity": "CRITICAL",
"attackVector": "NETWORK",
"attackComplexity": "LOW",
"privilegesRequired": "LOW",
"userInteraction": "NONE",
"scope": "CHANGED",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"availabilityImpact": "HIGH"
},
"exploitabilityScore": 3.1,
"impactScore": 6.0
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"timestamp": "2026-08-05T00:00:00+00:00",
"id": "CVE-2026-20304",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
]
},
"weaknesses": [
{
"source": "[email protected]",
"type": "Secondary",
"description": [
{
"lang": "en",
"value": "CWE-284"
}
]
}
],
"references": [
{
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-sdwan-faLcR3K",
"source": "[email protected]"
},
{
"url": "https://www.cve.org/Media/News/item/blog/2026/06/16/Preserving-Vulnerability-Level-Identification",
"source": "af854a3a-2127-422b-91ae-364da2661108"
}
]
}