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Fencer Intel
high 8.8

CVE-2018-21214 json

Certain NETGEAR devices are affected by a buffer overflow by an unauthenticated attacker.

published 6y ago modified 4mo ago also EUVD-2018-13732

cvss
8.8
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 54%
public exploits
0
none known

Summary

Certain NETGEAR devices are affected by a buffer overflow by an unauthenticated attacker. This affects D3600 before 1.0.0.67, D6000 before 1.0.0.67, EX2700 before 1.0.1.28, R6100 before 1.0.1.20, R7500v2 before 1.0.3.24, R9000 before 1.0.2.52, WN2000RPTv3 before 1.0.1.20, WN3000RPv3 before 1.0.2.50, and WN3100RPv2 before 1.0.0.56.

Patch / fix

  • netgear r9000_firmware 1.0.2.52
  • netgear ex2700_firmware 1.0.1.28
  • netgear r6100_firmware 1.0.1.20
  • netgear r7500_firmware 1.0.3.24
  • netgear d6000_firmware 1.0.0.67
  • netgear d3600_firmware 1.0.0.67
  • netgear wn2000rpt_firmware 1.0.1.20
  • netgear wn3000rp_firmware 1.0.2.50
  • netgear wn3100rp_firmware 1.0.0.56

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Exploit prediction

0.73% chance of exploitation in the next 30 days, higher than 54% of all scored CVEs (FIRST EPSS, 2026-11-09).

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 8.8 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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 5.8 AV:A/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness
  • CWE-120 Buffer Copy without Checking Size of Input

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.