CVE-2026-8633
IBM Web Server Plug-ins for WebSphere Application Server and WebSphere Liberty 8.5, 9.0 IBM WebSphere Application Server and WebSphere Application Server Liberty are vulnerable to remote code execution in the Web Server Plug-ins, through a specially crafted request.
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: 0.94%
- Percentil entre todas las CVEs puntuadas: 60
- 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 access95 % - Impacto principal
T1059Command and Scripting Interpreterexecution95 %
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N indica acceso remoto sin privilegios ni interacción; CWE-94 (Improper Control of Generation of Code) con RCE explícita en descripción confirma T1190 como explotación. El impacto es ejecución de código remoto (T1059) dado que el atacante ejecuta comandos mediante s
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 (1)
CWE
- CWE-94
Referencias
JSON original (NVD)
Mostrar
{
"id": "CVE-2026-8633",
"cveTags": [],
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-8633",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "none"
},
{
"automatable": "yes"
},
{
"technicalImpact": "total"
}
],
"version": "2.0.3",
"timestamp": "2026-05-27T03:56:00.521727Z"
}
}
],
"cvssMetricV31": [
{
"type": "Secondary",
"source": "psirt@us.ibm.com",
"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": "psirt@us.ibm.com",
"affectedData": [
{
"cpes": [
"cpe:2.3:a:ibm:web_server_plug_ins_for_websphere_application_server_and_websphere_liberty:8.5:*:*:*:*:*:*:*",
"cpe:2.3:a:ibm:web_server_plug_ins_for_websphere_application_server_and_websphere_liberty:8.5.0:*:*:*:*:*:*:*"
],
"vendor": "IBM",
"product": "Web Server Plug-ins for WebSphere Application Server and WebSphere Liberty",
"versions": [
{
"status": "affected",
"version": "8.5, 9.0",
"versionType": "custom"
}
]
}
]
}
],
"published": "2026-05-26T18:16:56.513",
"references": [
{
"url": "https://www.ibm.com/support/pages/node/7274072",
"tags": [
"Vendor Advisory"
],
"source": "psirt@us.ibm.com"
}
],
"vulnStatus": "Analyzed",
"weaknesses": [
{
"type": "Secondary",
"source": "psirt@us.ibm.com",
"description": [
{
"lang": "en",
"value": "CWE-94"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "IBM Web Server Plug-ins for WebSphere Application Server and WebSphere Liberty 8.5, 9.0 IBM WebSphere Application Server and WebSphere Application Server Liberty are vulnerable to remote code execution in the Web Server Plug-ins, through a specially crafted request."
},
{
"lang": "es",
"value": "Plugins de servidor web de IBM para WebSphere Servidor de Aplicaciones y WebSphere Liberty 8.5, 9.0 IBM WebSphere Servidor de Aplicaciones y WebSphere Servidor de Aplicaciones Liberty son vulnerables a la ejecución remota de código en los Plugins de servidor web, a través de una solicitud especialmente diseñada."
}
],
"lastModified": "2026-07-23T11:10:00.120",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:ibm:websphere_application_server:*:*:*:*:-:*:*:*",
"vulnerable": true,
"matchCriteriaId": "631AA3FA-7D84-45CB-A5DB-9DEB7ABF32E7",
"versionEndIncluding": "8.5.5.29",
"versionStartIncluding": "8.5.0.0"
},
{
"criteria": "cpe:2.3:a:ibm:websphere_application_server:*:*:*:*:liberty:*:*:*",
"vulnerable": true,
"matchCriteriaId": "5E720E76-CEDA-45EE-BCAF-57084994FCBB",
"versionEndIncluding": "8.5.5.29",
"versionStartIncluding": "8.5.0.0"
},
{
"criteria": "cpe:2.3:a:ibm:websphere_application_server:*:*:*:*:-:*:*:*",
"vulnerable": true,
"matchCriteriaId": "C7A90C7D-5C17-4C1E-B6F8-9E70851863AA",
"versionEndIncluding": "9.0.5.27",
"versionStartIncluding": "9.0.0.0"
},
{
"criteria": "cpe:2.3:a:ibm:websphere_application_server:*:*:*:*:liberty:*:*:*",
"vulnerable": true,
"matchCriteriaId": "9A26A652-4DE4-4D8D-8D8E-3F4DCE7BD392",
"versionEndIncluding": "9.0.5.27",
"versionStartIncluding": "9.0.0.0"
}
],
"operator": "OR"
}
]
}
],
"sourceIdentifier": "psirt@us.ibm.com"
}