HOMEVULNERABILITIESCVE-2019-20699
CRITICAL

CVE-2019-20699

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

9.8
CVSS v3.1

Official Description

Certain NETGEAR devices are affected by a buffer overflow by an unauthenticated attacker. This affects GS105Ev2 before 1.6.0.4, GS105PE before 1.6.0.4, GS408EPP before 1.0.0.15, GS808E before 1.7.0.7, GS908E before 1.7.0.3, GSS108E before 1.6.0.4, and GSS108EPP before 1.0.0.15.

NVD Source

Technical Analysis

CVE-2019-20699 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

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 9.8.

CVSS v3.1 Vector Breakdown

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

Affected Vendors & Products

netgear14 product(s)
gs105e firmwaregs105egs105pe firmwaregs105pegs408epp firmwaregs408eppgs808e firmwaregs808egs908e firmwaregs908egss108e firmwaregss108e+2
Source: NVD CPE · 14 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/000061230/Security-Advisory-for-Pre-Authentication-Buffer-Overflow-on-Some-Switches-PSV-2018-0538
ADVISORYhttps://kb.netgear.com/000061230/Security-Advisory-for-Pre-Authentication-Buffer-Overflow-on-Some-Switches-PSV-2018-0538

All References (2)

→
https://kb.netgear.com/000061230/Security-Advisory-for-Pre-Authentication-Buffer-Overflow-on-Some-Switches-PSV-2018-0538Vendor Advisory
→
https://kb.netgear.com/000061230/Security-Advisory-for-Pre-Authentication-Buffer-Overflow-on-Some-Switches-PSV-2018-0538Vendor Advisory

Quick Facts

CVE IDCVE-2019-20699
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-120
CISA KEVNo
Affected1 vendor(s)
PublishedApr 16, 2020

Related CVEs (CWE-120)

CVE-2022-22570
10.0
CVE-1999-0385
10.0
CVE-2023-4260
10.0
CVE-2022-20827
10.0
CVE-1999-1237
10.0
CVE-2017-16740
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2019-20699 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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