CVE-2026-21962
Vulnerability in the Oracle HTTP Server, Oracle Weblogic Server Proxy Plug-in product of Oracle Fusion Middleware (component: Weblogic Server Proxy Plug-in for Apache HTTP Server, Weblogic Server Proxy Plug-in for IIS). Supported versions that are affected are 12.2.1.4.0, 14.1.1.0.0 and 14.1.2.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle HTTP Server, Oracle Weblogic Server Proxy Plug-in.
Leer descripción completaMostrar menos
While the vulnerability is in Oracle HTTP Server, Oracle Weblogic Server Proxy Plug-in, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Oracle HTTP Server, Oracle Weblogic Server Proxy Plug-in accessible data as well as unauthorized access to critical data or complete access to all Oracle HTTP Server, Oracle Weblogic Server Proxy Plug-in accessible data. Note: Affected version for Weblogic Server Proxy Plug-in for IIS is 12.2.1.4.0 only. CVSS 3.1 Base Score 10.0 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N).
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
- Puntuación base: 10
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 73%
- Percentil entre todas las CVEs puntuadas: 99
- 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).
CISA KEV — explotada activamente
- Añadida al catálogo: 24/8/2026
- Plazo de remediación: 27/8/2026
- Uso conocido en ransomware: Unknown
🎯 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
T1005Data from Local Systemcollection90 % - Impacto secundario
T1552.001Credentials In Filescredential access80 % - Impacto secundario
T1565.002Transmitted Data Manipulationimpact85 %
AV:N, PR:N, UI:N en componente web expuesto (HTTP Server/Proxy). Impactos: acceso a datos (C:H), modificación de datos (I:H) sin ejecución de código indicada.
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-284
Referencias
- https://www.oracle.com/security-alerts/cpujan2026.html
- https://github.com/Ashwesker/Ashwesker-CVE-2026-21962/issues/1
- https://web.archive.org/web/20260129165916/https://github.com/Ashwesker/Ashwesker-CVE-2026-21962/issues/1
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-21962
- https://x.com/0xacb/status/2015473216844620280
JSON original (NVD)
Mostrar
{
"id": "CVE-2026-21962",
"cveTags": [],
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-21962",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "active"
},
{
"automatable": "yes"
},
{
"technicalImpact": "total"
}
],
"version": "2.0.3",
"timestamp": "2026-01-21T00:00:00+00:00"
}
}
],
"cvssMetricV31": [
{
"type": "Secondary",
"source": "secalert_us@oracle.com",
"cvssData": {
"scope": "CHANGED",
"version": "3.1",
"baseScore": 10,
"attackVector": "NETWORK",
"baseSeverity": "CRITICAL",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N",
"integrityImpact": "HIGH",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "NONE",
"privilegesRequired": "NONE",
"confidentialityImpact": "HIGH"
},
"impactScore": 5.8,
"exploitabilityScore": 3.9
}
]
},
"affected": [
{
"source": "secalert_us@oracle.com",
"affectedData": [
{
"vendor": "Oracle Corporation",
"product": "Oracle HTTP Server, Oracle Weblogic Server Proxy Plug-in",
"versions": [
{
"status": "affected",
"version": "12.2.1.4.0",
"versionType": "semver"
},
{
"status": "affected",
"version": "14.1.1.0.0",
"versionType": "semver"
},
{
"status": "affected",
"version": "14.1.2.0.0",
"versionType": "semver"
}
]
}
]
}
],
"published": "2026-01-20T22:15:59.110",
"references": [
{
"url": "https://www.oracle.com/security-alerts/cpujan2026.html",
"tags": [
"Patch",
"Vendor Advisory"
],
"source": "secalert_us@oracle.com"
},
{
"url": "https://github.com/Ashwesker/Ashwesker-CVE-2026-21962/issues/1",
"tags": [
"Broken Link",
"Not Applicable"
],
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
},
{
"url": "https://web.archive.org/web/20260129165916/https://github.com/Ashwesker/Ashwesker-CVE-2026-21962/issues/1",
"tags": [
"Issue Tracking"
],
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
},
{
"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-21962",
"tags": [
"US Government Resource"
],
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
},
{
"url": "https://x.com/0xacb/status/2015473216844620280",
"tags": [
"Not Applicable"
],
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
}
],
"vulnStatus": "Analyzed",
"weaknesses": [
{
"type": "Secondary",
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"description": [
{
"lang": "en",
"value": "CWE-284"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Vulnerability in the Oracle HTTP Server, Oracle Weblogic Server Proxy Plug-in product of Oracle Fusion Middleware (component: Weblogic Server Proxy Plug-in for Apache HTTP Server, Weblogic Server Proxy Plug-in for IIS). Supported versions that are affected are 12.2.1.4.0, 14.1.1.0.0 and 14.1.2.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle HTTP Server, Oracle Weblogic Server Proxy Plug-in. While the vulnerability is in Oracle HTTP Server, Oracle Weblogic Server Proxy Plug-in, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Oracle HTTP Server, Oracle Weblogic Server Proxy Plug-in accessible data as well as unauthorized access to critical data or complete access to all Oracle HTTP Server, Oracle Weblogic Server Proxy Plug-in accessible data. Note: Affected version for Weblogic Server Proxy Plug-in for IIS is 12.2.1.4.0 only. CVSS 3.1 Base Score 10.0 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N)."
},
{
"lang": "es",
"value": "Vulnerabilidad en el producto Oracle HTTP Server, Oracle Weblogic Server Proxy Plug-in de Oracle Fusion Middleware (componente: Weblogic Server Proxy Plug-in para Servidor HTTP Apache, Weblogic Server Proxy Plug-in para IIS). Las versiones compatibles afectadas son 12.2.1.4.0, 14.1.1.0.0 y 14.1.2.0.0. Una vulnerabilidad fácilmente explotable permite a un atacante no autenticado con acceso de red vía HTTP comprometer Oracle HTTP Server, Oracle Weblogic Server Proxy Plug-in. Aunque la vulnerabilidad está en Oracle HTTP Server, Oracle Weblogic Server Proxy Plug-in, los ataques pueden impactar significativamente productos adicionales (cambio de alcance). Los ataques exitosos de esta vulnerabilidad pueden resultar en acceso no autorizado de creación, eliminación o modificación de datos críticos o de todos los datos accesibles por Oracle HTTP Server, Oracle Weblogic Server Proxy Plug-in, así como acceso no autorizado a datos críticos o acceso completo a todos los datos accesibles por Oracle HTTP Server, Oracle Weblogic Server Proxy Plug-in. Nota: La versión afectada para Weblogic Server Proxy Plug-in para IIS es solo 12.2.1.4.0. Puntuación Base CVSS 3.1 10.0 (impactos en la Confidencialidad e Integridad). Vector CVSS: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N)."
}
],
"lastModified": "2026-08-25T04:18:11.067",
"cisaActionDue": "2026-08-27",
"cisaExploitAdd": "2026-08-24",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:oracle:http_server:12.2.1.4.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "AD04BEE5-E9A8-4584-A68C-0195CE9C402C"
},
{
"criteria": "cpe:2.3:a:oracle:http_server:14.1.1.0.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "24404505-FD69-4844-8253-053776E1CC1D"
},
{
"criteria": "cpe:2.3:a:oracle:http_server:14.1.2.0.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "49A6B4CB-3C5C-446A-902D-3C4824CA24D0"
},
{
"criteria": "cpe:2.3:a:oracle:weblogic_server_proxy_plug-in:12.2.1.4.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "5E29C004-51D7-4BBE-B28A-EE6B7B10F89F"
},
{
"criteria": "cpe:2.3:a:oracle:weblogic_server_proxy_plug-in:14.1.1.0.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "6E726C52-A697-4A3B-AA34-F88FF8FE5DEB"
},
{
"criteria": "cpe:2.3:a:oracle:weblogic_server_proxy_plug-in:14.1.2.0.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "A6C22A45-61D1-43D3-A187-993FBA4485F0"
}
],
"operator": "OR"
}
]
}
],
"sourceIdentifier": "secalert_us@oracle.com",
"cisaRequiredAction": "Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.",
"cisaVulnerabilityName": "Oracle HTTP Server and Oracle Weblogic Server Proxy Plug-in Improper Access Control Vulnerability"
}