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CVE-2018-21209

18
FAUCET Score

CVE-2018-21209 describes a reflected Cross-Site Scripting (XSS) vulnerability impacting several NETGEAR router models, including the JNR1010v2, JR6150, and WNDR3700v5, among others, prior to specific firmware versions. This medium-severity vulnerability (CVSS 4.8) requires high privileges and local network access to exploit, potentially leading to limited impact on confidentiality and integrity. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.1.0.46CPE matchmatch criteria
cpe:2.3:o:netgear:jnr1010_firmware:*:*:*:*:*:*:*:*
< 1.0.1.10CPE matchmatch criteria
cpe:2.3:o:netgear:jr6150_firmware:*:*:*:*:*:*:*:*
< 1.1.0.46CPE matchmatch criteria
cpe:2.3:o:netgear:jwnr2010_firmware:*:*:*:*:*:*:*:*
< 1.0.0.20CPE matchmatch criteria
cpe:2.3:o:netgear:pr2000_firmware:*:*:*:*:*:*:*:*
< 1.0.1.10CPE matchmatch criteria
cpe:2.3:o:netgear:r6050_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
0.66%
Probability of exploitation in next 30 days
EPSS Percentile
47.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0066 is in the 58th percentile among its peer group of 399 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 / 000055140/Security-Advisory-for-Reflected-Cross-Site-Scripting-on-Some-Routers-and-Extenders-PSV-2017-2514
Vendor Advisory