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 v4.0

8.7 HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1

7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS

0.37% chance of exploitation in the next 30 days, 30th percentile

Published

2026-01-28

Updated

2026-07-28

Proof-of-concept exploits (1)

• https://www.exploit-db.com/exploits/49126

References

• CVE Record
• NVD entry

Related

• CVE-2020-36962
• CVE-2020-36964
• CVE-2020-36961
• CVE-2020-36965
• CVE-2020-36960
• CVE-2020-36966