CVE-2020-36963

High

Description

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.

SeverityHigh

CVSS7.5

Exploit probability—

ProductIntelbras Router RF 301K

PublishedJan 28, 2026

First seenJan 28, 2026

Weakness typeCWE-306Missing authentication for critical function

How to fix

Sources list no fixed version or patch link for this vulnerability.

Affected products

Product	Affected versions	Fixed in
Intelbras Intelbras Router RF 301K	firmware version 1.1.2	—

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