HOMEVULNERABILITIESCVE-2019-20686
HIGH

CVE-2019-20686

CWE-120Published: April 16, 2020· Updated: Jun 17, 2026

8.8
CVSS v3.1

Official Description

Certain NETGEAR devices are affected by a buffer overflow by an unauthenticated attacker. This affects D6200 before 1.1.00.36, D7000 before 1.0.1.74, JR6150 before 1.0.1.18, PR2000 before 1.0.0.28, R6020 before 1.0.0.40, R6080 before 1.0.0.40, R6050 before 1.0.1.18, R6120 before 1.0.0.48, R6220 before 1.1.0.86, R6260 before 1.1.0.64, R6700v2 before 1.2.0.36, R6800 before 1.2.0.36, R6900v2 before 1.2.0.36, and WNR2020 before 1.1.0.62.

NVD Source

Technical Analysis

CVE-2019-20686 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), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.8.

CVSS v3.1 Vector Breakdown

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

Affected Vendors & Products

netgear28 product(s)
d6200 firmwared6200d7000 firmwared7000jr6150 firmwarejr6150pr2000 firmwarepr2000r6020 firmwarer6020r6080 firmwarer6080+16
Source: NVD CPE · 28 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

ADVISORYhttps://kb.netgear.com/000061453/Security-Advisory-for-Pre-Authentication-Buffer-Overflow-on-Some-Routers-Gateways-and-Extenders-PSV-2018-0239
ADVISORYhttps://kb.netgear.com/000061453/Security-Advisory-for-Pre-Authentication-Buffer-Overflow-on-Some-Routers-Gateways-and-Extenders-PSV-2018-0239

All References (2)

→
https://kb.netgear.com/000061453/Security-Advisory-for-Pre-Authentication-Buffer-Overflow-on-Some-Routers-Gateways-and-Extenders-PSV-2018-0239Vendor Advisory
→
https://kb.netgear.com/000061453/Security-Advisory-for-Pre-Authentication-Buffer-Overflow-on-Some-Routers-Gateways-and-Extenders-PSV-2018-0239Vendor Advisory

Quick Facts

CVE IDCVE-2019-20686
CVSS Score8.8 / 10
SeverityHIGH
WeaknessCWE-120
CISA KEVNo
Affected1 vendor(s)
PublishedApr 16, 2020

Related CVEs (CWE-120)

CVE-1999-0385
10.0
CVE-2007-1770
10.0
CVE-2001-0554
10.0
CVE-1999-0046
10.0
CVE-2002-1337
10.0
CVE-2022-22570
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2019-20686 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. CVE data is provided under the NVD usage policy.
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