CVE-2026-76476
Noticias y reportajes en Orbitaley
Como parte del compromiso continuo de Cisco con la seguridad proactiva y la calidad de sus productos, los equipos de ingeniería de Cisco Emergency Responder, Cisco Prime Collaboration Deployment, Cisco Unified Communications Manager (Unified CM), Cisco Unified Communications Manager IM & Presence Service (Unified CM IM&P), Cisco Unified Communications Manager Session Management Edition (Unified CM SME) y Cisco Unity Connection han llevado a cabo una revisión interna exhaustiva de seguridad. Esta revisión ha dado lugar a versiones de endurecimiento de software que corrigen múltiples vulnerabilidades descubiertas internamente.
Leer descripción completaMostrar menos
Las vulnerabilidades registradas con el identificador CVE-2026-76476 están relacionadas con problemas de validación incorrecta de la entrada, que se agrupan en la clase CWE-20 de la Enumeración de Debilidades Comunes (CWE, Common Weakness Enumeration).
Traducción automática del texto original de NVD (en inglés).
CVSS
- Puntuación base
- 8.8
- Versión
- 3.1
- Vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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).
Técnicas ATT&CK
Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.
- Explotación
T1210Exploitation of Remote Serviceslateral movement65 %
El vector AV:N/PR:L/UI:N exige red con privilegios sin interacción (T1210); el texto solo cita CWE-20 sin describir qué logra el atacante, así que no se asignan impactos.
Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.
Mitigaciones ATT&CK que cubren estas técnicas
Tecnologías afectadas (6)
⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.
CWE
- CWE-20
Referencias
JSON original (NVD)
Mostrar
{
"id": "CVE-2026-76476",
"cveTags": [],
"metrics": {
"cvssMetricV31": [
{
"type": "Primary",
"source": "psirt@cisco.com",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 8.8,
"attackVector": "NETWORK",
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"integrityImpact": "HIGH",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "LOW",
"confidentialityImpact": "HIGH"
},
"impactScore": 5.9,
"exploitabilityScore": 2.8
}
]
},
"affected": [
{
"source": "psirt@cisco.com",
"affectedData": [
{
"vendor": "Cisco",
"product": "Cisco Emergency Responder",
"versions": [
{
"status": "affected",
"version": "14"
},
{
"status": "affected",
"version": "14SU1"
},
{
"status": "affected",
"version": "14SU2"
},
{
"status": "affected",
"version": "14SU3"
},
{
"status": "affected",
"version": "14SU3a"
},
{
"status": "affected",
"version": "15"
},
{
"status": "affected",
"version": "15SU1"
},
{
"status": "affected",
"version": "15SU1a"
},
{
"status": "affected",
"version": "14SU4"
},
{
"status": "affected",
"version": "15SU2"
},
{
"status": "affected",
"version": "15SU3"
},
{
"status": "affected",
"version": "14SU5"
},
{
"status": "affected",
"version": "15SU4"
},
{
"status": "affected",
"version": "14SU6"
}
],
"defaultStatus": "unknown"
},
{
"vendor": "Cisco",
"product": "Cisco Unified Communications Manager",
"versions": [
{
"status": "affected",
"version": "14"
},
{
"status": "affected",
"version": "14SU1"
},
{
"status": "affected",
"version": "14SU2"
},
{
"status": "affected",
"version": "14SU3"
},
{
"status": "affected",
"version": "15"
},
{
"status": "affected",
"version": "15SU1"
},
{
"status": "affected",
"version": "14SU4"
},
{
"status": "affected",
"version": "14SU4a"
},
{
"status": "affected",
"version": "15SU1a"
},
{
"status": "affected",
"version": "15SU2"
},
{
"status": "affected",
"version": "15.0.1.13010-1"
},
{
"status": "affected",
"version": "15.0.1.13011-1"
},
{
"status": "affected",
"version": "15.0.1.13012-1"
},
{
"status": "affected",
"version": "15.0.1.13013-1"
},
{
"status": "affected",
"version": "15.0.1.13014-1"
},
{
"status": "affected",
"version": "15.0.1.13015-1"
},
{
"status": "affected",
"version": "15.0.1.13016-1"
},
{
"status": "affected",
"version": "15.0.1.13017-1"
},
{
"status": "affected",
"version": "15SU3a"
},
{
"status": "affected",
"version": "14SU5"
},
{
"status": "affected",
"version": "15SU4"
},
{
"status": "affected",
"version": "15SU4a"
},
{
"status": "affected",
"version": "14SU6"
}
],
"defaultStatus": "unknown"
},
{
"vendor": "Cisco",
"product": "Cisco Unified Communications Manager IM and Presence Service",
"versions": [
{
"status": "affected",
"version": "14"
},
{
"status": "affected",
"version": "14SU1"
},
{
"status": "affected",
"version": "14SU2"
},
{
"status": "affected",
"version": "14SU2a"
},
{
"status": "affected",
"version": "14SU3"
},
{
"status": "affected",
"version": "15"
},
{
"status": "affected",
"version": "15SU1"
},
{
"status": "affected",
"version": "14SU4"
},
{
"status": "affected",
"version": "15SU2"
},
{
"status": "affected",
"version": "15SU3"
},
{
"status": "affected",
"version": "14SU5"
},
{
"status": "affected",
"version": "15SU4"
},
{
"status": "affected",
"version": "14SU6"
}
],
"defaultStatus": "unknown"
},
{
"vendor": "Cisco",
"product": "Cisco Unity Connection",
"versions": [
{
"status": "affected",
"version": "14"
},
{
"status": "affected",
"version": "14SU1"
},
{
"status": "affected",
"version": "14SU2"
},
{
"status": "affected",
"version": "14SU3"
},
{
"status": "affected",
"version": "14SU3a"
},
{
"status": "affected",
"version": "15"
},
{
"status": "affected",
"version": "15SU1"
},
{
"status": "affected",
"version": "14SU4"
},
{
"status": "affected",
"version": "15SU2"
},
{
"status": "affected",
"version": "15SU3"
},
{
"status": "affected",
"version": "14SU5"
},
{
"status": "affected",
"version": "15SU4"
},
{
"status": "affected",
"version": "14SU6"
}
],
"defaultStatus": "unknown"
}
]
}
],
"published": "2026-10-21T17:19:07.387",
"references": [
{
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-voice-hardening-twgbH9e3",
"source": "psirt@cisco.com"
}
],
"vulnStatus": "Awaiting Analysis",
"weaknesses": [
{
"type": "Primary",
"source": "psirt@cisco.com",
"description": [
{
"lang": "en",
"value": "CWE-20"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "As part of Cisco's ongoing commitment to proactive security and product quality, engineering teams for Cisco Emergency Responder, Cisco Prime Collaboration Deployment, Cisco Unified Communications Manager (Unified CM), Cisco Unified Communications Manager IM & Presence Service (Unified CM IM&P), Cisco Unified Communications Manager Session Management Edition (Unified CM SME), and Cisco Unity Connection have conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities. \r\n\r\nThe vulnerabilities tracked by CVE-2026-76476 are related to issues concerning improper input validation that are grouped under the Common Weakness Enumeration (CWE) Class CWE-20."
}
],
"lastModified": "2026-10-21T18:54:37.403",
"sourceIdentifier": "psirt@cisco.com"
}