CVE-2025-7673
Estado: AnalizadaCrítica (9.8)—
A buffer overflow vulnerability in the URL parser of the zhttpd web server in Zyxel VMG8825-T50K firmware versions prior to V5.50(ABOM.5)C0 could allow an unauthenticated attacker to cause denial-of-service (DoS) conditions and potentially execute arbitrary code by sending a specially crafted HTTP request.
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: 0.59%
- Percentil entre todas las CVEs puntuadas: 47
- 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).
🎯 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
T1059Command and Scripting Interpreterexecution90 % - Impacto secundario
T1499.004Application or System Exploitationimpact85 %
Buffer overflow en web server accesible remotamente sin autenticación (AV:N/PR:N) permite ejecución de código arbitrario o DoS. CVSS crítico con C:H/I:H/A:H confirma impacto múltiple.
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 (24)
Zyxel — Emg3525-t50b FirmwareZyxel — Emg5523-t50b FirmwareZyxel — Emg5723-t50k FirmwareZyxel — Emg6726-b10a FirmwareZyxel — Ex3510-b0 FirmwareZyxel — Ex5510-b0 FirmwareZyxel — Vmg1312-t20b FirmwareZyxel — Vmg3625-t50b FirmwareZyxel — Vmg3925-b10b FirmwareZyxel — Vmg3925-b10c FirmwareZyxel — Vmg3927-b50a FirmwareZyxel — Vmg3927-b50b FirmwareZyxel — Vmg3927-b60a FirmwareZyxel — Vmg3927-t50k FirmwareZyxel — Vmg4005-b50b FirmwareZyxel — Vmg4927-b50a FirmwareZyxel — Vmg8623-t50b FirmwareZyxel — Vmg8825-b50a FirmwareZyxel — Vmg8825-b60a FirmwareZyxel — Vmg8825-bx0b FirmwareZyxel — Vmg8825-t50k FirmwareZyxel — Vmg8924-b10d FirmwareZyxel — Xmg3927-b50a FirmwareZyxel — Xmg8825-b50a Firmware
CWE
- CWE-120
Referencias
JSON original (NVD)
Mostrar
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