CVE-2026-76455
Estado: RecibidaCrítica (9.8)—
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco NX-OS engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple internally discovered vulnerabilities.
The vulnerabilities tracked by CVE-2026-76455 are related to improper access control issues that are grouped under the Common Weakness Enumeration (CWE) CWE-284.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Puntuación base: 9.8
Probabilidad de explotación (EPSS)
FIRST aún no ha puntuado esta CVE (habitual en CVEs muy recientes o rechazadas).
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (7)
⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.
CWE
- CWE-284
Referencias
JSON original (NVD)
Mostrar
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{
"status": "affected",
"version": "4.3(4a)"
},
{
"status": "affected",
"version": "4.2(3k)"
},
{
"status": "affected",
"version": "4.3(4b)"
},
{
"status": "affected",
"version": "4.3(4c)"
},
{
"status": "affected",
"version": "4.2(3l)"
},
{
"status": "affected",
"version": "4.3(4d)"
},
{
"status": "affected",
"version": "4.3(2f)"
},
{
"status": "affected",
"version": "4.2(3m)"
},
{
"status": "affected",
"version": "4.3(5a)"
},
{
"status": "affected",
"version": "4.3(4e)"
},
{
"status": "affected",
"version": "4.1(3n)"
},
{
"status": "affected",
"version": "4.3(4f)"
},
{
"status": "affected",
"version": "4.2(3n)"
},
{
"status": "affected",
"version": "4.3(5c)"
},
{
"status": "affected",
"version": "4.2(3o)"
},
{
"status": "affected",
"version": "4.3(5d)"
},
{
"status": "affected",
"version": "4.3(6a)"
},
{
"status": "affected",
"version": "4.3(6b)"
},
{
"status": "affected",
"version": "4.3(5e)"
},
{
"status": "affected",
"version": "4.3(6c)"
},
{
"status": "affected",
"version": "4.2(3p)"
},
{
"status": "affected",
"version": "6.0(1b)"
},
{
"status": "affected",
"version": "6.0(1c)"
},
{
"status": "affected",
"version": "4.3(6d)"
},
{
"status": "affected",
"version": "6.0(1d)"
},
{
"status": "affected",
"version": "6.0(1e)"
},
{
"status": "affected",
"version": "4.3(6e)"
},
{
"status": "affected",
"version": "6.0(1f)"
},
{
"status": "affected",
"version": "4.3(6f)"
},
{
"status": "affected",
"version": "6.0(2b)"
},
{
"status": "affected",
"version": "6.0(1h)"
},
{
"status": "affected",
"version": "4.2(3r)"
},
{
"status": "affected",
"version": "6.0(2c)"
},
{
"status": "affected",
"version": "4.3(6g)"
},
{
"status": "affected",
"version": "6.0(2d)"
},
{
"status": "affected",
"version": "4.3(6h)"
},
{
"status": "affected",
"version": "4.2(3s)"
},
{
"status": "affected",
"version": "4.3(6i)"
}
],
"defaultStatus": "unknown"
}
]
}
],
"published": "2026-10-07T17:16:57.520",
"references": [
{
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-nxosw1-cWzSbtR",
"source": "psirt@cisco.com"
}
],
"vulnStatus": "Received",
"weaknesses": [
{
"type": "Primary",
"source": "psirt@cisco.com",
"description": [
{
"lang": "en",
"value": "CWE-284"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco NX-OS engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple internally discovered vulnerabilities.\r\n\r\nThe vulnerabilities tracked by CVE-2026-76455 are related to improper access control issues that are grouped under the Common Weakness Enumeration (CWE) CWE-284."
}
],
"lastModified": "2026-10-07T17:16:57.520",
"sourceIdentifier": "psirt@cisco.com"
}