CVE-2021-20016

Estado: AnalizadaCrítica (9.8)⚠ Explotación activa

A SQL-Injection vulnerability in the SonicWall SSLVPN SMA100 product allows a remote unauthenticated attacker to perform SQL query to access username password and other session related information. This vulnerability impacts SMA100 build version 10.x.

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: 40%
Percentil entre todas las CVEs puntuadas: 99
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).

CISA KEV — explotada activamente

Añadida al catálogo: 3/11/2021
Plazo de remediación: 17/11/2021
Uso conocido en ransomware: Known

🎯 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 principalT1005 Data from Local Systemcollection90 %
Impacto secundarioT1078 Valid Accountsstealth · persistence · privilege escalation · initial access85 %
Impacto secundarioT1565.001 Stored Data Manipulationimpact75 %

SQL injection en SonicWall SMA100 sin autenticación (AV:N PR:N) permite lectura de credenciales y datos de sesión. CVSS crítico (9.8) con impacto alto en confidencialidad e integridad. Activamente explotado.

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 (6)

Sonicwall — SMA 100 Firmware Sonicwall — SMA 200 Firmware Sonicwall — SMA 210 Firmware Sonicwall — SMA 400 Firmware Sonicwall — SMA 410 Firmware Sonicwall — SMA 500v

CWE

CWE-89
CWE-89

Referencias

JSON original (NVD)

Mostrar

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