CVE-2025-20253
Estado: AplazadaAlta (8.6)—
A vulnerability in the IKEv2 feature of Cisco IOS Software, IOS XE Software, Secure Firewall ASA Software, and Secure FTD Software could allow an unauthenticated, remote attacker to cause the device to reload, resulting in a DoS condition.
This vulnerability is due to the improper processing of IKEv2 packets. An attacker could exploit this vulnerability by sending crafted IKEv2 packets to an affected device. A successful exploit could allow the attacker to cause an infinite loop that exhausts resources and could cause the device to reload.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
- Puntuación base: 8.6
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.47%
- Percentil entre todas las CVEs puntuadas: 39
- Fecha de la puntuación: 6/10/2026
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
T1499.004Application or System Exploitationimpact80 %
Vector CVSS con AV:N/PR:N permite explotación remota sin autenticación (T1190). La vulnerabilidad causa infinite loop y agotamiento de recursos, causando recarga del dispositivo (DoS por consumo de recursos, T1499.004).
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 (4)
⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.
CWE
- CWE-835
Referencias
JSON original (NVD)
Mostrar
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{
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{
"status": "affected",
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{
"status": "affected",
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{
"status": "affected",
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{
"status": "affected",
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{
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{
"status": "affected",
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{
"status": "affected",
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{
"status": "affected",
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{
"status": "affected",
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{
"status": "affected",
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{
"status": "affected",
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{
"status": "affected",
"version": "6.6.5.2"
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{
"status": "affected",
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{
"status": "affected",
"version": "6.4.0.15"
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{
"status": "affected",
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{
"status": "affected",
"version": "7.0.2.1"
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{
"status": "affected",
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{
"status": "affected",
"version": "6.6.7"
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{
"status": "affected",
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{
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{
"status": "affected",
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},
{
"status": "affected",
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{
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{
"status": "affected",
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},
{
"status": "affected",
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},
{
"status": "affected",
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},
{
"status": "affected",
"version": "7.2.3"
},
{
"status": "affected",
"version": "6.6.7.1"
},
{
"status": "affected",
"version": "7.3.1"
},
{
"status": "affected",
"version": "7.1.0.3"
},
{
"status": "affected",
"version": "7.2.4"
},
{
"status": "affected",
"version": "7.0.6"
},
{
"status": "affected",
"version": "7.2.5"
},
{
"status": "affected",
"version": "7.2.4.1"
},
{
"status": "affected",
"version": "7.3.1.1"
},
{
"status": "affected",
"version": "7.4.0"
},
{
"status": "affected",
"version": "6.4.0.17"
},
{
"status": "affected",
"version": "7.0.6.1"
},
{
"status": "affected",
"version": "7.2.5.1"
},
{
"status": "affected",
"version": "7.4.1"
},
{
"status": "affected",
"version": "7.2.6"
},
{
"status": "affected",
"version": "7.0.6.2"
},
{
"status": "affected",
"version": "7.4.1.1"
},
{
"status": "affected",
"version": "6.6.7.2"
},
{
"status": "affected",
"version": "6.4.0.18"
},
{
"status": "affected",
"version": "7.2.7"
},
{
"status": "affected",
"version": "7.2.5.2"
},
{
"status": "affected",
"version": "7.3.1.2"
},
{
"status": "affected",
"version": "7.2.8"
},
{
"status": "affected",
"version": "7.6.0"
},
{
"status": "affected",
"version": "7.4.2"
},
{
"status": "affected",
"version": "7.2.8.1"
},
{
"status": "affected",
"version": "7.0.6.3"
},
{
"status": "affected",
"version": "7.4.2.1"
},
{
"status": "affected",
"version": "7.2.9"
},
{
"status": "affected",
"version": "7.0.7"
},
{
"status": "affected",
"version": "7.7.0"
},
{
"status": "affected",
"version": "7.4.2.2"
}
],
"defaultStatus": "unknown"
}
]
}
],
"published": "2025-08-14T17:15:38.983",
"references": [
{
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asa-ftd-ios-dos-DOESHWHy",
"source": "psirt@cisco.com"
}
],
"vulnStatus": "Deferred",
"weaknesses": [
{
"type": "Secondary",
"source": "psirt@cisco.com",
"description": [
{
"lang": "en",
"value": "CWE-835"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A vulnerability in the IKEv2 feature of Cisco IOS Software, IOS XE Software, Secure Firewall ASA Software, and Secure FTD Software could allow an unauthenticated, remote attacker to cause the device to reload, resulting in a DoS condition.\r\n\r\nThis vulnerability is due to the improper processing of IKEv2 packets. An attacker could exploit this vulnerability by sending crafted IKEv2 packets to an affected device. A successful exploit could allow the attacker to cause an infinite loop that exhausts resources and could cause the device to reload."
},
{
"lang": "es",
"value": "Una vulnerabilidad en la función IKEv2 del software Cisco IOS, IOS XE, Secure Firewall ASA y Secure FTD podría permitir que un atacante remoto no autenticado reinicie el dispositivo, lo que resulta en una denegación de servicio (DoS). Esta vulnerabilidad se debe al procesamiento incorrecto de paquetes IKEv2. Un atacante podría explotar esta vulnerabilidad enviando paquetes IKEv2 manipulados a un dispositivo afectado. Una explotación exitosa podría permitir al atacante provocar un bucle infinito que agote los recursos y provoque la recarga del dispositivo."
}
],
"lastModified": "2026-06-17T08:41:11.987",
"sourceIdentifier": "psirt@cisco.com"
}