CVE-2026-20153
Estado: En análisisAlta (7.5)—
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco RoomOS 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-2026-20153 are related to improper input validation that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-20.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Puntuación base: 7.5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.47%
- Percentil entre todas las CVEs puntuadas: 38
- Fecha de la puntuación: 5/10/2026
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
T1190Exploit Public-Facing Applicationinitial access85 % - Impacto principal
T1499Endpoint Denial of Serviceimpact80 %
Vector CVSS indica acceso de red sin privilegios (AV:N/PR:N/UI:N) con impacto alto en disponibilidad (A:H). CWE-20 (improper input validation) en servicio remoto sugiere DoS por entrada malformada.
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 (2)
CWE
- CWE-20
Referencias
JSON original (NVD)
Mostrar
{
"id": "CVE-2026-20153",
"cveTags": [],
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-20153",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "none"
},
{
"automatable": "yes"
},
{
"technicalImpact": "partial"
}
],
"version": "2.0.3",
"timestamp": "2026-07-15T18:06:30.490867Z"
}
}
],
"cvssMetricV31": [
{
"type": "Secondary",
"source": "psirt@cisco.com",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 7.5,
"attackVector": "NETWORK",
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"integrityImpact": "NONE",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "NONE",
"confidentialityImpact": "NONE"
},
"impactScore": 3.6,
"exploitabilityScore": 3.9
}
]
},
"affected": [
{
"source": "psirt@cisco.com",
"affectedData": [
{
"vendor": "Cisco",
"product": "Cisco RoomOS Software",
"versions": [
{
"status": "affected",
"version": "RoomOS 10.11.2.2"
},
{
"status": "affected",
"version": "RoomOS 10.15.2.2"
},
{
"status": "affected",
"version": "RoomOS 11.5.4.6"
},
{
"status": "affected",
"version": "RoomOS 11.5.2.4"
},
{
"status": "affected",
"version": "RoomOS 10.8.2.5"
},
{
"status": "affected",
"version": "RoomOS 10.11.5.2"
},
{
"status": "affected",
"version": "RoomOS 10.11.3.0"
},
{
"status": "affected",
"version": "RoomOS 10.15.5.3"
},
{
"status": "affected",
"version": "RoomOS 10.19.2.2"
},
{
"status": "affected",
"version": "RoomOS 11.1.3.1"
},
{
"status": "affected",
"version": "RoomOS 10.11.6.0"
},
{
"status": "affected",
"version": "RoomOS 10.19.3.0"
},
{
"status": "affected",
"version": "RoomOS 10.19.4.2"
},
{
"status": "affected",
"version": "RoomOS 10.3.2.4"
},
{
"status": "affected",
"version": "RoomOS 10.3.4.0"
},
{
"status": "affected",
"version": "RoomOS 10.15.3.0"
},
{
"status": "affected",
"version": "RoomOS 11.1.4.1"
},
{
"status": "affected",
"version": "RoomOS 11.14.2.3"
},
{
"status": "affected",
"version": "RoomOS 11.1.2.4"
},
{
"status": "affected",
"version": "RoomOS 10.8.3.1"
},
{
"status": "affected",
"version": "RoomOS 11.14.2.1"
},
{
"status": "affected",
"version": "RoomOS 10.3.3.0"
},
{
"status": "affected",
"version": "RoomOS 10.8.4.0"
},
{
"status": "affected",
"version": "RoomOS 10.15.4.1"
},
{
"status": "affected",
"version": "RoomOS 10.19.5.6"
},
{
"status": "affected",
"version": "RoomOS 10.11.4.1"
},
{
"status": "affected",
"version": "RoomOS 11.9.3.1"
},
{
"status": "affected",
"version": "RoomOS 11.5.3.3"
},
{
"status": "affected",
"version": "RoomOS 10.3.2.0"
},
{
"status": "affected",
"version": "RoomOS 11.9.2.4"
},
{
"status": "affected",
"version": "RoomOS 11.14.3.0"
},
{
"status": "affected",
"version": "RoomOS 11.17.2.2"
},
{
"status": "affected",
"version": "RoomOS 11.14.4.0"
},
{
"status": "affected",
"version": "RoomOS 10.19 StepUpg"
},
{
"status": "affected",
"version": "RoomOS 11.17.3.0"
},
{
"status": "affected",
"version": "RoomOS 11.20.2.3"
},
{
"status": "affected",
"version": "RoomOS 11.14.5.0"
},
{
"status": "affected",
"version": "RoomOS 11.17.4.0"
},
{
"status": "affected",
"version": "RoomOS 11.20.3.0"
},
{
"status": "affected",
"version": "RoomOS 11.23.1.6"
},
{
"status": "affected",
"version": "RoomOS 11.23.1.8"
},
{
"status": "affected",
"version": "RoomOS 11.24.1.5"
},
{
"status": "affected",
"version": "RoomOS 11.24.2.4"
},
{
"status": "affected",
"version": "RoomOS 11.24.3.0"
},
{
"status": "affected",
"version": "RoomOS 11.24.4.1"
},
{
"status": "affected",
"version": "RoomOS 11.27.2.0"
},
{
"status": "affected",
"version": "RoomOS 11.28.1.3"
},
{
"status": "affected",
"version": "RoomOS 11.27.3.0"
},
{
"status": "affected",
"version": "RoomOS 11.31.1.5"
},
{
"status": "affected",
"version": "RoomOS 11.27.4.0"
},
{
"status": "affected",
"version": "RoomOS 11.32.2.1"
},
{
"status": "affected",
"version": "RoomOS 11.33.1.7"
},
{
"status": "affected",
"version": "RoomOS 26.0.1.2"
},
{
"status": "affected",
"version": "RoomOS 11.34.1.2"
},
{
"status": "affected",
"version": "RoomOS 11.32.3.0"
},
{
"status": "affected",
"version": "RoomOS 11.27.5.0"
},
{
"status": "affected",
"version": "RoomOS 11.32.4.0"
},
{
"status": "affected",
"version": "RoomOS 26.1.1.5"
},
{
"status": "affected",
"version": "RoomOS 11.35.1.2"
},
{
"status": "affected",
"version": "RoomOS 26.2.2.2"
},
{
"status": "affected",
"version": "RoomOS 11.32.5.1"
},
{
"status": "affected",
"version": "RoomOS 26.4.1.6"
},
{
"status": "affected",
"version": "RoomOS 26.4.1.4"
},
{
"status": "affected",
"version": "RoomOS 26.3.1.3"
},
{
"status": "affected",
"version": "RoomOS 11.36.1.1"
},
{
"status": "affected",
"version": "RoomOS 11.37.1.0"
},
{
"status": "affected",
"version": "RoomOS 26.5.2.0"
},
{
"status": "affected",
"version": "RoomOS 11.38.1.1"
}
],
"defaultStatus": "unknown"
}
]
}
],
"published": "2026-07-15T17:16:47.247",
"references": [
{
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-roomos-AqNMbEq",
"tags": [
"Vendor Advisory"
],
"source": "psirt@cisco.com"
},
{
"url": "https://www.cve.org/Media/News/item/blog/2026/06/16/Preserving-Vulnerability-Level-Identification",
"source": "af854a3a-2127-422b-91ae-364da2661108"
}
],
"vulnStatus": "Undergoing Analysis",
"weaknesses": [
{
"type": "Secondary",
"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, the Cisco RoomOS 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-2026-20153 are related to improper input validation that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-20."
}
],
"lastModified": "2026-08-14T21:17:12.760",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:cisco:roomos:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "2DAB6FC3-5699-48C7-9CCE-81F9BF3811F2",
"versionEndExcluding": "11.32.6.0"
},
{
"criteria": "cpe:2.3:o:cisco:roomos:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "B625A5DE-98DE-44D5-9044-939413A66689",
"versionEndExcluding": "26.5.2.2",
"versionStartIncluding": "26.0.1.2"
},
{
"criteria": "cpe:2.3:o:cisco:roomos_cloud:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "AC956F89-2FDE-4CD9-838A-8CF133177236",
"versionEndExcluding": "11.39.1.1"
},
{
"criteria": "cpe:2.3:o:cisco:roomos_cloud:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "4A01FB2F-C564-428C-912C-175920AEF60C",
"versionEndExcluding": "26.7.1.7",
"versionStartIncluding": "26.0.1.2"
}
],
"operator": "OR"
}
]
}
],
"sourceIdentifier": "psirt@cisco.com"
}