HOMEVULNERABILITIESCVE-2020-17409
MEDIUM

CVE-2020-17409

CWE-288Published: October 13, 2020· Updated: Jun 17, 2026

6.5
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2020-17409 requires adjacent network access, limiting remote exploitation but still posing risk in shared or local network environments.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 6.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorAdjacent
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected Vendors & Products

netgear22 product(s)
r6020 firmwarer6020r6080 firmwarer6080r6120 firmwarer6120r6220 firmwarer6220r6230 firmwarer6230r6260 firmwarer6260+10
Source: NVD CPE · 22 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://kb.netgear.com/000062304/Security-Advisory-for-Authentication-Bypass-on-Some-Routers-PSV-2020-0258
PATCHhttps://kb.netgear.com/000062304/Security-Advisory-for-Authentication-Bypass-on-Some-Routers-PSV-2020-0258
ADVISORYhttps://www.zerodayinitiative.com/advisories/ZDI-20-1176/
ADVISORYhttps://www.zerodayinitiative.com/advisories/ZDI-20-1176/

All References (4)

→
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

Quick Facts

CVE IDCVE-2020-17409
CVSS Score6.5 / 10
SeverityMEDIUM
WeaknessCWE-288
CISA KEVNo
Affected1 vendor(s)
PublishedOct 13, 2020

Related CVEs (CWE-288)

CVE-2026-20079
10.0
CVE-2026-48020
10.0
CVE-2026-53622
10.0
CVE-2026-48491
10.0
CVE-2024-2013
10.0
CVE-2024-2973
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2020-17409 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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