CVE-2022-30525
Estado: AnalizadaCrítica (9.8)⚠ Explotación activa
A OS command injection vulnerability in the CGI program of Zyxel USG FLEX 100(W) firmware versions 5.00 through 5.21 Patch 1, USG FLEX 200 firmware versions 5.00 through 5.21 Patch 1, USG FLEX 500 firmware versions 5.00 through 5.21 Patch 1, USG FLEX 700 firmware versions 5.00 through 5.21 Patch 1, USG FLEX 50(W) firmware versions 5.10 through 5.21 Patch 1, USG20(W)-VPN firmware versions 5.10 through 5.21 Patch 1, ATP series firmware versions 5.10 through 5.21 Patch 1, VPN series firmware versions 4.60 through 5.21 Patch 1, which could allow an attacker to modify specific files and then execute some OS commands on a vulnerable device.
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: 100%
- Percentil entre todas las CVEs puntuadas: 100
- Fecha de la puntuación: 29/9/2026
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: 16/5/2022
- Plazo de remediación: 6/6/2022
- 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.
- Explotación
T1190Exploit Public-Facing Applicationinitial access95 % - Impacto principal
T1059Command and Scripting Interpreterexecution95 % - Impacto secundario
T1565.001Stored Data Manipulationimpact75 %
OS command injection en CGI expuesto (AV:N, PR:N, UI:N), CWE-78. Permite ejecución de comandos del SO y modificación de archivos en dispositivo remoto sin autenticación.
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 (16)
Zyxel — Atp100 FirmwareZyxel — Atp100w FirmwareZyxel — Atp200 FirmwareZyxel — Atp500 FirmwareZyxel — Atp700 FirmwareZyxel — Atp800 FirmwareZyxel — Usg20w-vpn FirmwareZyxel — USG Flex 100w FirmwareZyxel — USG Flex 200 FirmwareZyxel — USG Flex 500 FirmwareZyxel — USG Flex 50W FirmwareZyxel — USG Flex 700 FirmwareZyxel — Vpn1000 FirmwareZyxel — Vpn100 FirmwareZyxel — Vpn300 FirmwareZyxel — Vpn50 Firmware
CWE
- CWE-78
- CWE-78
Referencias
- http://packetstormsecurity.com/files/167176/Zyxel-Remote-Command-Execution.html
- http://packetstormsecurity.com/files/167182/Zyxel-Firewall-ZTP-Unauthenticated-Command-Injection.html
- http://packetstormsecurity.com/files/167372/Zyxel-USG-FLEX-5.21-Command-Injection.html
- http://packetstormsecurity.com/files/168202/Zyxel-Firewall-SUID-Binary-Privilege-Escalation.html
- https://www.zyxel.com/support/Zyxel-security-advisory-for-OS-command-injection-vulnerability-of-firewalls.shtml
- http://packetstormsecurity.com/files/167176/Zyxel-Remote-Command-Execution.html
- http://packetstormsecurity.com/files/167182/Zyxel-Firewall-ZTP-Unauthenticated-Command-Injection.html
- http://packetstormsecurity.com/files/167372/Zyxel-USG-FLEX-5.21-Command-Injection.html
- http://packetstormsecurity.com/files/168202/Zyxel-Firewall-SUID-Binary-Privilege-Escalation.html
- https://www.zyxel.com/support/Zyxel-security-advisory-for-OS-command-injection-vulnerability-of-firewalls.shtml
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-30525
JSON original (NVD)
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