HOMEVULNERABILITIESCVE-2017-18840
MEDIUM

CVE-2017-18840

CWE-20Published: April 20, 2020· Updated: Jun 17, 2026

6.2
CVSS v3.1

Official Description

Certain NETGEAR devices are affected by denial of service. This affects M4300-28G before 12.0.2.15, M4300-52G before 12.0.2.15, M4300-28G-POE+ before 12.0.2.15, M4300-52G-POE+ before 12.0.2.15, M4300-8X8F before 12.0.2.15, M4300-12X12F before 12.0.2.15, M4300-24X24F before 12.0.2.15, M4300-24X before 12.0.2.15, M4300-48X before 12.0.2.15, and M4200 before 12.0.2.15.

NVD Source

Technical Analysis

CVE-2017-18840 requires local access, meaning attackers must already have a foothold on the target system.

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 availability disruption (denial of service), with a CVSS base score of 6.2.

CVSS v3.1 Vector Breakdown

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

Affected Vendors & Products

netgear20 product(s)
m4300-28g firmwarem4300-28gm4300-52g firmwarem4300-52gm4300-28g-poe\+ firmwarem4300-28g-poe\+m4300-52g-poe\+ firmwarem4300-52g-poe\+m4300-8x8f firmwarem4300-8x8fm4300-12x12f firmwarem4300-12x12f+8
Source: NVD CPE · 20 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/000049022/Security-Advisory-for-Denial-of-Service-Vulnerability-on-Some-Fully-Managed-Switches-PSV-2017-2005
ADVISORYhttps://kb.netgear.com/000049022/Security-Advisory-for-Denial-of-Service-Vulnerability-on-Some-Fully-Managed-Switches-PSV-2017-2005

All References (2)

→
https://kb.netgear.com/000049022/Security-Advisory-for-Denial-of-Service-Vulnerability-on-Some-Fully-Managed-Switches-PSV-2017-2005Vendor Advisory
→
https://kb.netgear.com/000049022/Security-Advisory-for-Denial-of-Service-Vulnerability-on-Some-Fully-Managed-Switches-PSV-2017-2005Vendor Advisory

Quick Facts

CVE IDCVE-2017-18840
CVSS Score6.2 / 10
SeverityMEDIUM
WeaknessCWE-20
CISA KEVNo
Affected1 vendor(s)
PublishedApr 20, 2020

Related CVEs (CWE-20)

CVE-2008-5014
10.0
CVE-2009-0258
10.0
CVE-2008-4404
10.0
CVE-2008-4641
10.0
CVE-2008-3479
10.0
CVE-2008-5810
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2017-18840 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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