CVE-2020-36963

HIGH
2026-01-28 [email protected]
7.5
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

Lifecycle Timeline

3
Analysis Generated
Mar 12, 2026 - 21:54 vuln.today
PoC Detected
Jan 29, 2026 - 19:16 vuln.today
Public exploit code
CVE Published
Jan 28, 2026 - 18:16 nvd
HIGH 7.5

Tags

Authentication Bypass

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.

Analysis

Intelbras Router RF 301K firmware version 1.1.2 contains an authentication bypass vulnerability that allows unauthenticated attackers to download router configuration files. [CVSS 7.5 HIGH]

Technical Context

Classified as CWE-306 (Missing Authentication for Critical Function). 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 contains an authentication bypass vulnerability that allows unauthenticated attackers to download rout

Remediation

Monitor vendor advisories for a patch. Restrict network access to the affected service where possible.

Priority Score

58
Low Medium High Critical
KEV: 0
EPSS: +0.3
CVSS: +38
POC: +20

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CVE-2020-36963 vulnerability details – vuln.today
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