CVE-2020-36963

Intelbras Router RF 301K firmware version 1.1.2 contains an authentication bypass vulnerability that allows unauthenticated attackers to download router configuration files. Attackers can send a specific HTTP GET request to /cgi-bin/DownloadCfg/RouterCfm.cfg to retrieve sensitive router configuration without authentication.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://www.exploit-db.com/exploits/49126
https://www.intelbras.com/pt-br/
https://www.vulncheck.com/advisories/intelbras-router-rf-k-authentication-bypass
https://www.exploit-db.com/exploits/49126

Configurations

No configuration.

History

15 Apr 2026, 00:35

Type	Values Removed	Values Added
Summary		(es) La versión de firmware 1.1.2 del Intelbras Router RF 301K contiene una vulnerabilidad de omisión de autenticación que permite a atacantes no autenticados descargar archivos de configuración del router. Los atacantes pueden enviar una solicitud HTTP GET específica a /cgi-bin/DownloadCfg/RouterCfm.cfg para recuperar la configuración sensible del router sin autenticación.

29 Jan 2026, 19:16

Type	Values Removed	Values Added
References	~~() https://www.exploit-db.com/exploits/49126 -~~	() https://www.exploit-db.com/exploits/49126 -

28 Jan 2026, 18:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-01-28 18:16

Updated : 2026-04-15 00:35

NVD link : CVE-2020-36963

Mitre link : CVE-2020-36963

CVE.ORG link : CVE-2020-36963

JSON object : View

Products Affected

No product.

CWE

CWE-306

Missing Authentication for Critical Function

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