HOMEVULNERABILITIESCVE-2018-21225
MEDIUM

CVE-2018-21225

CWE-78Published: April 28, 2020· Updated: Jun 17, 2026

6.8
CVSS v3.1

Official Description

Certain NETGEAR devices are affected by command injection by an authenticated user. This affects D7000 before 1.0.1.60, D7800 before 1.0.1.34, D8500 before 1.0.3.39, R6700 before 1.0.1.30, R6700v2 before 1.2.0.16, R6800 before 1.2.0.16, R6900 before 1.0.1.30, R6900P before 1.2.0.22, R6900v2 before 1.2.0.16, R7000 before 1.0.9.12, R7000P before 1.2.0.22, R7500v2 before 1.0.3.20, R7800 before 1.0.2.44, R8300 before 1.0.2.106, R8500 before 1.0.2.106, and R9000 before 1.0.2.52.

NVD Source

Technical Analysis

CVE-2018-21225 requires adjacent network access, limiting remote exploitation but still posing risk in shared or local network environments.

Exploitation requires high privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

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 6.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorAdjacent
Attack ComplexityLow
Privileges Req.High
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

netgear28 product(s)
d7800 firmwared7800d7000 firmwared7000d8500 firmwared8500r6700 firmwarer6700r6800 firmwarer6800r6900 firmwarer6900+16
Source: NVD CPE · 30 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/000055112/Security-Advisory-for-Post-Authentication-Command-Injection-on-Some-Routers-and-Gateways-PSV-2017-2160
ADVISORYhttps://kb.netgear.com/000055112/Security-Advisory-for-Post-Authentication-Command-Injection-on-Some-Routers-and-Gateways-PSV-2017-2160

All References (2)

→
https://kb.netgear.com/000055112/Security-Advisory-for-Post-Authentication-Command-Injection-on-Some-Routers-and-Gateways-PSV-2017-2160Vendor Advisory
→
https://kb.netgear.com/000055112/Security-Advisory-for-Post-Authentication-Command-Injection-on-Some-Routers-and-Gateways-PSV-2017-2160Vendor Advisory

Quick Facts

CVE IDCVE-2018-21225
CVSS Score6.8 / 10
SeverityMEDIUM
WeaknessCWE-78
CISA KEVNo
Affected1 vendor(s)
PublishedApr 28, 2020

Related CVEs (CWE-78)

CVE-2022-33192
10.0
CVE-2022-33194
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CVE-2021-31891
10.0
CVE-2020-26301
10.0
CVE-2022-33193
10.0
CVE-2022-33195
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Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2018-21225 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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