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CVE-2018-21214

25
FAUCET Score

CVE-2018-21214 describes a buffer overflow vulnerability in several NETGEAR devices, including various D3600, D6000, EX2700, R6100, R7500v2, R9000, WN2000RPTv3, WN3000RPv3, and WN3100RPv2 models, impacting versions prior to specified updates. This vulnerability carries a high CVSS score of 8.8, indicating a critical risk due to its network-adjacent attack vector, low attack complexity, and potential for high confidentiality, integrity, and availability impacts without requiring authentication. Currently, 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
< 1.0.2.52CPE matchmatch criteria
cpe:2.3:o:netgear:r9000_firmware:*:*:*:*:*:*:*:*
< 1.0.1.28CPE matchmatch criteria
cpe:2.3:o:netgear:ex2700_firmware:*:*:*:*:*:*:*:*
< 1.0.1.20CPE matchmatch criteria
cpe:2.3:o:netgear:r6100_firmware:*:*:*:*:*:*:*:*
< 1.0.3.24CPE matchmatch criteria
cpe:2.3:o:netgear:r7500_firmware:*:*:*:*:*:*:*:*
< 1.0.0.67CPE matchmatch criteria
cpe:2.3:o:netgear:d6000_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.8HIGH

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

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.73%
Probability of exploitation in next 30 days
EPSS Percentile
50.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0073 is in the 55th percentile among its peer group of 1,875 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.2 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 / 000055123/Security-Advisory-for-Pre-Authentication-Buffer-Overflow-on-Some-Routers-Gateways-and-Extenders-PSV-2017-2488
Vendor Advisory