CVE-2020-17409: NETGEAR JNR3210 Firmware

Medium severity, CVSS 6.5. EPSS: 0.7% chance of exploitation in the next 30 days.

This vulnerability allows network-adjacent attackers to disclose sensitive information on affected installations of NETGEAR R6120, R6080, R6260, R6220, R6020, JNR3210, and WNR2020 routers with firmware 1.0.66. Authentication is not required to exploit this vulnerability. The specific flaw exists within the mini_httpd service, which listens on TCP port 80 by default. The issue results from incorrect string matching logic when accessing protected pages. An attacker can leverage this vulnerability to disclose stored credentials, leading to further compromise. Was ZDI-CAN-10754.

Affected products

NETGEAR JNR3210 Firmware: affected versions not specified
NETGEAR r6020 Firmware: before 1.0.0.44 (fixed in 1.0.0.44)
NETGEAR r6080 Firmware: before 1.0.0.44 (fixed in 1.0.0.44)
NETGEAR r6120 Firmware: before 1.0.0.70 (fixed in 1.0.0.70)
NETGEAR r6220 Firmware: before 1.1.0.100 (fixed in 1.1.0.100)
NETGEAR r6230 Firmware: before 1.1.0.100 (fixed in 1.1.0.100)
NETGEAR r6260 Firmware: before 1.1.0.76 (fixed in 1.1.0.76)
NETGEAR r6330 Firmware: before 1.1.0.76 (fixed in 1.1.0.76)
NETGEAR r6350 Firmware: before 1.1.0.76 (fixed in 1.1.0.76)
NETGEAR r6850 Firmware: before 1.1.0.76 (fixed in 1.1.0.76)
NETGEAR WNR2020 Firmware: affected versions not specified

Published 2020-10-13. Last modified 2026-06-17.