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CVE-2020-17409

MEDIUM
6.5
CVSS Score
Published: October 13, 2020 at 05:10 PM UTC
Updated: June 17, 2026 at 02:58 AM UTC
22 products affected across 1 vendorR6220 FirmwareR6260 FirmwareR6120 Firmware

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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.7%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

JNR3210 Firmware· NETGEAR
95%
All versions
netgear-jnr3210 (same device)
R6020 Firmware· NETGEAR
95%
v < 1.0.0.44
Affected range stops below 1.0.0.44, so it looks safe — our inference, not a vendor statement
netgear-r6020 (same device)
R6080 Firmware· NETGEAR
95%
v < 1.0.0.44
Affected range stops below 1.0.0.44, so it looks safe — our inference, not a vendor statement
netgear-r6080 (same device)
R6120 Firmware· NETGEAR
95%
v < 1.0.0.70
Affected range stops below 1.0.0.70, so it looks safe — our inference, not a vendor statement
netgear-r6120 (same device)
R6220 Firmware· NETGEAR
95%
v < 1.1.0.100
Affected range stops below 1.1.0.100, so it looks safe — our inference, not a vendor statement
netgear-r6220 (same device)
R6230 Firmware· NETGEAR
95%
v < 1.1.0.100
Affected range stops below 1.1.0.100, so it looks safe — our inference, not a vendor statement
netgear-r6230 (same device)
R6260 Firmware· NETGEAR
95%
v < 1.1.0.76
Affected range stops below 1.1.0.76, so it looks safe — our inference, not a vendor statement
netgear-r6260 (same device)
R6330 Firmware· NETGEAR
95%
v < 1.1.0.76
Affected range stops below 1.1.0.76, so it looks safe — our inference, not a vendor statement
netgear-r6330 (same device)
R6350 Firmware· NETGEAR
95%
v < 1.1.0.76
Affected range stops below 1.1.0.76, so it looks safe — our inference, not a vendor statement
netgear-r6350 (same device)
R6850 Firmware· NETGEAR
95%
v < 1.1.0.76
Affected range stops below 1.1.0.76, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

x_refsource_MISCPatchVendor Advisory
Source: [email protected]
https://kb.netgear.com/000062304/Security-Advisory-for-Authentication-Bypass-on-Some-Routers-PSV-2020-0258
x_refsource_MISCThird Party AdvisoryVDB Entry
Source: [email protected]
https://www.zerodayinitiative.com/advisories/ZDI-20-1176/

CVSS

6.5MEDIUM[email protected]
Attack Vector
ADJACENT_NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-288

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