CVE-2015-7755

Estado: AnalizadaCrítica (9.8)⚠ Explotación activa

Juniper ScreenOS 6.2.0r15 through 6.2.0r18, 6.3.0r12 before 6.3.0r12b, 6.3.0r13 before 6.3.0r13b, 6.3.0r14 before 6.3.0r14b, 6.3.0r15 before 6.3.0r15b, 6.3.0r16 before 6.3.0r16b, 6.3.0r17 before 6.3.0r17b, 6.3.0r18 before 6.3.0r18b, 6.3.0r19 before 6.3.0r19b, and 6.3.0r20 before 6.3.0r21 allows remote attackers to obtain administrative access by entering an unspecified password during a (1) SSH or (2) TELNET session.

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: 61%
Percentil entre todas las CVEs puntuadas: 99
Fecha de la puntuación: 2/10/2026

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: 2/10/2025
Plazo de remediación: 23/10/2025
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.

ExplotaciónT1190 Exploit Public-Facing Applicationinitial access95 %
Impacto principalT1078 Valid Accountsstealth · persistence · privilege escalation · initial access95 %

Vector AV:N/PR:N/UI:N indica explotación remota sin autenticación previa (T1190). La vulnerabilidad permite bypass de autenticación SSH/TELNET para obtener acceso administrativo (T1078), permitiendo ejecución de comandos subsecuente (T1059.001).

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

Privileged Account Management Application Developer Guidance Active Directory Configuration Vulnerability Scanning User Training User Account Management

Tecnologías afectadas (1)

Juniper — Screenos

CWE

CWE-287
CWE-287

Referencias

JSON original (NVD)

Mostrar

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      "value": "Juniper ScreenOS 6.2.0r15 hasta la versión 6.2.0r18, 6.3.0r12 en versiones anteriores a 6.3.0r12b, 6.3.0r13 en versiones anteriores a 6.3.0r13b, 6.3.0r14 en versiones anteriores a 6.3.0r14b, 6.3.0r15 en versiones anteriores a 6.3.0r15b, 6.3.0r16 en versiones anteriores a 6.3.0r16b, 6.3.0r17 en versiones anteriores a 6.3.0r17b, 6.3.0r18 en versiones anteriores a 6.3.0r18b, 6.3.0r19 en versiones anteriores a 6.3.0r19b y 6.3.0r20 en versiones anteriores a 6.3.0r21 permite a atacantes remotos obtener acceso administrativo entrando una contraseña no especificada durante una sesión (1) SSH o (2) TELNET."
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