CVE-2026-8501
Improper access control in the PCTCore64.sys Windows kernel driver from PC Tools Internet Security allows user-mode processes to access the PCTCoreDriver WDM device interface and invoke privileged IOCTL handlers. A local attacker with the ability to access or load the affected driver can exploit this vulnerability to perform sensitive and privileged operations on the target system.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Puntuación base: 7.8
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.18%
- Percentil entre todas las CVEs puntuadas: 7
- 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
T1068Exploitation for Privilege Escalationprivilege escalation85 % - Impacto principal
T1059Command and Scripting Interpreterexecution75 % - Impacto secundario
T1548Abuse Elevation Control Mechanismprivilege escalation70 %
Acceso local (AV:L) sin interacción de usuario a controlador kernel con manejo IOCTL privilegiado en PCTCore64.sys permite escalada de privilegios y ejecución de código con permisos elevados.
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)
⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.
CWE
- CWE-782
Referencias
- https://kb.cert.org/vuls/id/158530
- https://learn.microsoft.com/en-us/windows/security/application-security/application-control/app-control-for-business/design/microsoft-recommended-driver-block-rules
- https://learn.microsoft.com/en-us/windows/win32/secauthz/security-descriptor-definition-language
- https://www.kb.cert.org/vuls/id/158530
JSON original (NVD)
Mostrar
{
"id": "CVE-2026-8501",
"cveTags": [],
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{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-8501",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"version": "2.0.3",
"timestamp": "2026-06-01T18:20:00.476148Z"
}
}
],
"cvssMetricV31": [
{
"type": "Secondary",
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"cvssData": {
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"version": "3.1",
"baseScore": 7.8,
"attackVector": "LOCAL",
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"integrityImpact": "HIGH",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "LOW",
"confidentialityImpact": "HIGH"
},
"impactScore": 5.9,
"exploitabilityScore": 1.8
}
]
},
"affected": [
{
"source": "cret@cert.org",
"affectedData": [
{
"vendor": "Symantec",
"product": "PC Tools Internet Security",
"versions": [
{
"status": "affected",
"version": "*"
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"published": "2026-06-01T17:17:35.513",
"references": [
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"url": "https://kb.cert.org/vuls/id/158530",
"source": "cret@cert.org"
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{
"url": "https://learn.microsoft.com/en-us/windows/security/application-security/application-control/app-control-for-business/design/microsoft-recommended-driver-block-rules",
"source": "cret@cert.org"
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{
"url": "https://learn.microsoft.com/en-us/windows/win32/secauthz/security-descriptor-definition-language",
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"source": "af854a3a-2127-422b-91ae-364da2661108"
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"vulnStatus": "Awaiting Analysis",
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"description": [
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"descriptions": [
{
"lang": "en",
"value": "Improper access control in the PCTCore64.sys Windows kernel driver from PC Tools Internet Security allows user-mode processes to access the PCTCoreDriver WDM device interface and invoke privileged IOCTL handlers. A local attacker with the ability to access or load the affected driver can exploit this vulnerability to perform sensitive and privileged operations on the target system."
},
{
"lang": "es",
"value": "Control de acceso inadecuado en el controlador del kernel de Windows PCTCore64.sys de PC Tools Internet Security permite a los procesos en modo de usuario acceder a la interfaz de dispositivo WDM PCTCoreDriver e invocar manejadores IOCTL privilegiados. Un atacante local con la capacidad de acceder o cargar el controlador afectado puede explotar esta vulnerabilidad para realizar operaciones sensibles y privilegiadas en el sistema objetivo."
}
],
"lastModified": "2026-07-22T07:10:00.107",
"sourceIdentifier": "cret@cert.org"
}