High 7.5Published Jan 28, 2026

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

Updated under an hour ago (Oct 27, 2026, 12:23 PM ET)

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Every CVE for Intelbras Router RF 301K

Exploited in the last 30 days

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: 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness (CWE): CWE-306
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Deferred
Record last updated: Jul 27, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Intelbras Intelbras Router RF 301K intelbras:router_rf_301k (from the name)	firmware version 1.1.2	CNA record

References

References

https://www.exploit-db.com/exploits/49126	exploit
https://www.intelbras.com/pt-br/	product
https://www.vulncheck.com/advisories/intelbras-router-rf-k-authentication-bypass	third-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.