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Fencer Intel
medium 4.5

CVE-2018-21165 json

Certain NETGEAR devices are affected by denial of service.

published 2020-04-23 6 y ago modified 2026-06-17 4 mo ago also EUVD-2018-13683

cvss
4.5
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.1%
EPSS 1.1% chance of exploitation in 30 days, percentile 66%
public exploits
0
none known

Summary

Certain NETGEAR devices are affected by denial of service. This affects R6100 before 1.0.1.22, R7500 before 1.0.0.122, R7800 before 1.0.2.42, R8900 before 1.0.3.10, R9000 before 1.0.3.10, WNDR3700v4 before 1.0.2.96, WNDR4300 before 1.0.2.98, WNDR4300v2 before 1.0.0.54, WNDR4500v3 before 1.0.0.54, and WNR2000v5 before 1.0.0.64.

Patch / fix

  • netgear r6100_firmware 1.0.1.22
  • netgear r7500_firmware 1.0.0.122
  • netgear r7800_firmware 1.0.2.42
  • netgear r8900_firmware 1.0.3.10
  • netgear r9000_firmware 1.0.3.10
  • netgear wndr3700_firmware 1.0.2.96
  • netgear wndr4300_firmware 1.0.0.54, 1.0.2.98
  • netgear wndr4500_firmware 1.0.0.54
  • netgear wnr2000_firmware 1.0.0.64

Exploit prediction

1.13% chance of exploitation in the next 30 days, higher than 66% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.0 4.5 CVSS:3.0/AC:L/AV:A/A:H/C:N/I:N/PR:H/S:U/UI:N
NVD 3.1 4.9 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
CNA 3.0 4.5 CVSS:3.0/AV:A/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 4.0 AV:N/AC:L/Au:S/C:N/I:N/A:P

References

Sources

Fencer Intel 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.