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CVE-2021-32030

Estado: AnalizadaCrítica (9.8)⚠ Explotación activa💥 Exploit

The administrator application on ASUS GT-AC2900 devices before 3.0.0.4.386.42643 and Lyra Mini before 3.0.0.4_384_46630 allows authentication bypass when processing remote input from an unauthenticated user, leading to unauthorized access to the administrator interface. This relates to handle_request in router/httpd/httpd.c and auth_check in web_hook.o. An attacker-supplied value of '\0' matches the device's default value of '\0' in some situations. Note: All versions of Lyra Mini and earlier which are unsupported (End-of-Life, EOL) are also affected by this vulnerability, Consumers can mitigate this vulnerability by disabling the remote access features from WAN.

CVSS

Probabilidad de explotación (EPSS)

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

💥 Exploits públicos

Hay código de explotación o plantillas de detección públicos. No es lo mismo que explotación activa confirmada (KEV), pero aumenta el riesgo: parchee con prioridad.

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

AV:N, PR:N, UI:N con bypass de autenticación (CWE-287) en interfaz remota de administrador permite acceso no autenticado y ejecución potencial de comandos con privilegios de admin.

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 ManagementApplication Developer GuidanceActive Directory ConfigurationVulnerability ScanningUser TrainingUser Account Management

Tecnologías afectadas (2)

Asus — Gt-ac2900 FirmwareAsus — Lyra Mini Firmware

CWE

Referencias

JSON original (NVD)

Mostrar
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      "value": "The administrator application on ASUS GT-AC2900 devices before 3.0.0.4.386.42643 and Lyra Mini before 3.0.0.4_384_46630 allows authentication bypass when processing remote input from an unauthenticated user, leading to unauthorized access to the administrator interface. This relates to handle_request in router/httpd/httpd.c and auth_check in web_hook.o. An attacker-supplied value of '\\0' matches the device's default value of '\\0' in some situations. Note: All versions of Lyra Mini and earlier which are unsupported (End-of-Life, EOL) are also affected by this vulnerability, Consumers can mitigate this vulnerability by disabling the remote access features from WAN."
    },
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      "value": "La aplicación de administrador en los dispositivos ASUS GT-AC2900 versiones anteriores a 3.0.0.4.386.42643, permite una omisión de autenticación cuando es procesada la entrada remota de un usuario no autenticado, conllevando a un acceso no autorizado a la interfaz de administrador. Esto se relaciona con la función handle_request en el archivo router/httpd/httpd.c y auth_check en web_hook.o. Un valor proporcionado por el atacante de \"\\0\" coincide con el valor predeterminado del dispositivo de \"\\0\" en algunas situaciones"
    }
  ],
  "lastModified": "2026-06-17T03:52:42.307",
  "cisaActionDue": "2025-06-23",
  "cisaExploitAdd": "2025-06-02",
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}