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CVE-2018-21167

19
FAUCET Score

CVE-2018-21167 describes a stored Cross-Site Scripting (XSS) vulnerability affecting numerous NETGEAR router and extender models, including the D6100, DM200, EX2700, and many others, before specific firmware versions. This medium-severity vulnerability (CVSS 5.5) has a network attack vector with low attack complexity, requiring high privileges for exploitation, and could lead to limited confidentiality and integrity impacts. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.0.0.57CPE matchmatch criteria
cpe:2.3:o:netgear:d6100_firmware:*:*:*:*:*:*:*:*
< 1.0.0.50CPE matchmatch criteria
cpe:2.3:o:netgear:dm200_firmware:*:*:*:*:*:*:*:*
< 1.0.1.32CPE matchmatch criteria
cpe:2.3:o:netgear:ex2700_firmware:*:*:*:*:*:*:*:*
< 1.0.1.70CPE matchmatch criteria
cpe:2.3:o:netgear:ex6100_firmware:*:*:*:*:*:*:*:*
< 1.0.1.70CPE matchmatch criteria
cpe:2.3:o:netgear:ex6150_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

4.8MEDIUM

CVSS:3.0/AV:A/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
1.7
Impact Score
2.7
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.80%
Probability of exploitation in next 30 days
EPSS Percentile
52.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0080 is in the 54th percentile among its peer group of 3,563 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

kb.netgear.com / 000055191/Security-Advisory-for-Stored-Cross-Site-Scripting-on-Routers-Gateways-Extenders-and-DSL-Modems-PSV-2017-3093
Vendor Advisory