What’s Vulnerable › Vulnerabilities

CVE-2020-36963: Intelbras Router RF 301K 1.1.2 - Authentication Bypass

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-01-28 · updated 2026-06-17
• Weakness: CWE-306

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.

Affected products

• Intelbras Router RF 301K: firmware version 1.1.2

References

• 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

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