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Fencer Vulns
high 8.8

CVE-2018-21140 json

Certain NETGEAR devices are affected by incorrect configuration of security settings.

published 2020-04-21 6 y ago modified 2026-06-17 4 mo ago also EUVD-2018-13658

cvss
8.8
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 44%
public exploits
0
none known

Summary

Certain NETGEAR devices are affected by incorrect configuration of security settings. This affects D3600 before 1.0.0.76 and D6000 before 1.0.0.76.

Patch / fix

  • netgear d3600_firmware 1.0.0.76
  • netgear d6000_firmware 1.0.0.76

Exploit prediction

0.52% chance of exploitation in the next 30 days, higher than 44% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.0 8.8 CVSS:3.0/AC:L/AV:A/A:H/C:H/I:H/PR:N/S:U/UI:N
NVD 3.1 6.5 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CNA 3.0 8.8 CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 3.3 AV:A/AC:L/Au:N/C:N/I:P/A:N

Classification

Weakness
  • CWE-20 Improper Input Validation

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.