CVE-2020-17409

Name: CVE-2020-17409
Creator: NVD / NIST
Published: 2020-10-13T17:15:13.777+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 0.69%

Last modified Jun 17, 2026

CVE-2020-17409 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. 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. EPSS estimates a 0.69% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

6.5/10

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

EPSS Probability

0.69%

48.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-288

Affected Software

Vendor	Product	Versions
Netgear	R6020 Firmware	< 1.0.0.44
Netgear	R6080 Firmware	< 1.0.0.44
Netgear	R6120 Firmware	< 1.0.0.70
Netgear	R6220 Firmware	< 1.1.0.100
Netgear	R6230 Firmware	< 1.1.0.100
Netgear	R6260 Firmware	< 1.1.0.76
Netgear	R6330 Firmware	< 1.1.0.76
Netgear	R6350 Firmware	< 1.1.0.76
Netgear	R6850 Firmware	< 1.1.0.76
Netgear	Jnr3210 Firmware	All versions
Netgear	Wnr2020 Firmware	All versions

References

https://kb.netgear.com/000062304/Security-Advisory-for-Authentication-Bypass-on-Some-Routers-PSV-2020-0258Patch, Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-20-1176/Third Party Advisory, VDB Entry
https://kb.netgear.com/000062304/Security-Advisory-for-Authentication-Bypass-on-Some-Routers-PSV-2020-0258Patch, Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-20-1176/Third Party Advisory, VDB Entry

Timeline

Published: Oct 13, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-17409?

How severe is CVE-2020-17409?

CVE-2020-17409 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.69% probability of exploitation in the next 30 days.

How do I fix CVE-2020-17409?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-17409?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST