CVE-2020-9015
Estado: ModificadaCrítica (9.8)—💥 Exploit
Arista DCS-7050QX-32S-R 4.20.9M, DCS-7050CX3-32S-R 4.20.11M, and DCS-7280SRAM-48C6-R 4.22.0.1F devices (and possibly other products) allow attackers to bypass intended TACACS+ shell restrictions via a | character. NOTE: the vendor reports that this is a configuration issue relating to an overly permissive regular expression in the TACACS+ server permitted commands
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)
- Probabilidad de explotación en los próximos 30 días: 16%
- Percentil entre todas las CVEs puntuadas: 97
- Fecha de la puntuación: 7/10/2026
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).
💥 Exploits públicos
Hay código de explotación o plantillas de detección públicos. No es lo mismo que explotación activa confirmada (KEV), pero aumenta el riesgo: parchee con prioridad.
- Módulo de Metasploit (exploit fiable y al alcance de cualquiera) · Arista restricted shell escape (with privesc)
Tecnologías afectadas (3)
CWE
- NVD-CWE-noinfo
Referencias
- http://packetstormsecurity.com/files/158119/Arista-Restricted-Shell-Escape-Privilege-Escalation.html
- https://eos.arista.com/arista-eos-is-not-vulnerable-to-cve-2020-9015/
- https://securitybytes.me
- https://securitybytes.me/posts/cve-2020-9015/
- http://packetstormsecurity.com/files/158119/Arista-Restricted-Shell-Escape-Privilege-Escalation.html
- https://eos.arista.com/arista-eos-is-not-vulnerable-to-cve-2020-9015/
- https://securitybytes.me
- https://securitybytes.me/posts/cve-2020-9015/
JSON original (NVD)
Mostrar
{
"id": "CVE-2020-9015",
"cveTags": [
{
"tags": [
"disputed"
],
"sourceIdentifier": "cve@mitre.org"
}
],
"metrics": {
"cvssMetricV2": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"version": "2.0",
"baseScore": 7.5,
"accessVector": "NETWORK",
"vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
"authentication": "NONE",
"integrityImpact": "PARTIAL",
"accessComplexity": "LOW",
"availabilityImpact": "PARTIAL",
"confidentialityImpact": "PARTIAL"
},
"acInsufInfo": false,
"impactScore": 6.4,
"baseSeverity": "HIGH",
"obtainAllPrivilege": false,
"exploitabilityScore": 10,
"obtainUserPrivilege": false,
"obtainOtherPrivilege": false,
"userInteractionRequired": false
}
],
"cvssMetricV31": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 9.8,
"attackVector": "NETWORK",
"baseSeverity": "CRITICAL",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"integrityImpact": "HIGH",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "NONE",
"confidentialityImpact": "HIGH"
},
"impactScore": 5.9,
"exploitabilityScore": 3.9
}
]
},
"affected": [
{
"source": "cve@mitre.org",
"affectedData": [
{
"vendor": "n/a",
"product": "n/a",
"versions": [
{
"status": "affected",
"version": "n/a"
}
]
}
]
}
],
"published": "2020-02-20T22:15:12.177",
"references": [
{
"url": "http://packetstormsecurity.com/files/158119/Arista-Restricted-Shell-Escape-Privilege-Escalation.html",
"source": "cve@mitre.org"
},
{
"url": "https://eos.arista.com/arista-eos-is-not-vulnerable-to-cve-2020-9015/",
"source": "cve@mitre.org"
},
{
"url": "https://securitybytes.me",
"tags": [
"Third Party Advisory"
],
"source": "cve@mitre.org"
},
{
"url": "https://securitybytes.me/posts/cve-2020-9015/",
"tags": [
"Broken Link"
],
"source": "cve@mitre.org"
},
{
"url": "http://packetstormsecurity.com/files/158119/Arista-Restricted-Shell-Escape-Privilege-Escalation.html",
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://eos.arista.com/arista-eos-is-not-vulnerable-to-cve-2020-9015/",
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://securitybytes.me",
"tags": [
"Third Party Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://securitybytes.me/posts/cve-2020-9015/",
"tags": [
"Broken Link"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
}
],
"vulnStatus": "Modified",
"weaknesses": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"description": [
{
"lang": "en",
"value": "NVD-CWE-noinfo"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Arista DCS-7050QX-32S-R 4.20.9M, DCS-7050CX3-32S-R 4.20.11M, and DCS-7280SRAM-48C6-R 4.22.0.1F devices (and possibly other products) allow attackers to bypass intended TACACS+ shell restrictions via a | character. NOTE: the vendor reports that this is a configuration issue relating to an overly permissive regular expression in the TACACS+ server permitted commands"
},
{
"lang": "es",
"value": "** EN DISPUTA ** Los dispositivos Arista DCS-7050QX-32S-R versión 4.20.9M, DCS-7050CX3-32S-R versión 4.20.11M y DCS-7280SRAM-48C6-R versión 4.22.0.1F (y posiblemente otros productos), permiten a atacantes omitir las restricciones de shell TACACS+ previstas por medio de un carácter |. NOTA: el proveedor informa que este es un problema de configuración relacionado con una expresión regular demasiado permisiva en los comandos permitidos del servidor TACACS +."
}
],
"lastModified": "2026-06-17T03:27:20.693",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:arista:dcs-7050qx-32s-r_firmware:4.20.9m:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "FFBADFE5-A368-4CA9-AD72-400DFBF381AF"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:arista:dcs-7050qx-32s-r:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "0630F568-230E-4067-B80E-4280CA371B35"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:arista:dcs-7050cx3-32s-r_firmware:4.20.11m:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "F7F04E8A-9FA0-4199-8F62-291EC835B154"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:arista:dcs-7050cx3-32s-r:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "E6F270D9-1B05-4CBC-BEE0-0850C94BB9F0"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:arista:dcs-7280sram-48c6-r_firmware:4.22.0.1f:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "09B0C068-0FBB-48BA-B5F4-A427D40CF110"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:arista:dcs-7280sram-48c6-r:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "4592091C-AD4A-4904-9EFF-C85AABFD7CDE"
}
],
"operator": "OR"
}
],
"operator": "AND"
}
],
"sourceIdentifier": "cve@mitre.org"
}