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Fencer Intel
medium 5.6

CVE-2019-20731 json

Certain NETGEAR devices are affected by a buffer overflow by an authenticated user.

published 6y ago modified 4mo ago also EUVD-2019-11270

cvss
5.6
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 31%
public exploits
0
none known

Summary

Certain NETGEAR devices are affected by a buffer overflow by an authenticated user. This affects D6220 before 1.0.0.40, D6400 before 1.0.0.74, D7000v2 before 1.0.0.74, D8500 before 1.0.3.39, EX3700 before 1.0.0.70, EX3800 before 1.0.0.70, EX6000 before 1.0.0.30, EX6100 before 1.0.2.22, EX6120 before 1.0.0.40, EX6130 before 1.0.0.22, EX6150v1 before 1.0.0.42, EX6200 before 1.0.3.88, EX7000 before 1.0.0.66, R6250 before 1.0.4.20, R6300v2 before 1.0.4.18, R6400v2 before 1.0.2.52, R6700 before 1.0.1.44, R6900 before 1.0.1.46, R7000 before 1.0.9.26, R6900P before 1.3.0.20, R7000P before 1.3.0.20, R7100LG before 1.0.0.34, R7300DST before 1.0.0.62, R8000 before 1.0.4.12, R7900P before 1.3.0.10, R8000P before 1.3.0.10, R8300 before 1.0.2.116, R8500 before 1.0.2.116, WN2500RPv2 before 1.0.1.54, and WNDR3400v3 before 1.0.1.18.

Patch / fix

  • netgear d6220_firmware 1.0.0.40
  • netgear d6400_firmware 1.0.0.74
  • netgear d7000_firmware 1.0.0.74
  • netgear d8500_firmware 1.0.3.39
  • netgear ex3700_firmware 1.0.0.70
  • netgear ex3800_firmware 1.0.0.70
  • netgear ex6000_firmware 1.0.0.30
  • netgear ex6100_firmware 1.0.2.22
  • netgear ex6120_firmware 1.0.0.40
  • netgear ex6130_firmware 1.0.0.22
  • netgear ex6150_firmware 1.0.0.42
  • netgear ex6200_firmware 1.0.3.88
  • netgear ex7000_firmware 1.0.0.66
  • netgear r6250_firmware 1.0.4.20
  • netgear r6300_firmware 1.0.4.18
  • netgear r6400_firmware 1.0.2.52
  • netgear r6700_firmware 1.0.1.44
  • netgear r6900_firmware 1.0.1.46
  • netgear r7000_firmware 1.0.9.26
  • netgear r6900p_firmware 1.3.0.20

Is CVE-2019-20731 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Exploit prediction

0.37% chance of exploitation in the next 30 days, higher than 31% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.0 5.6 CVSS:3.0/AC:L/AV:L/A:L/C:H/I:L/PR:H/S:U/UI:N
NVD 3.1 6.7 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CNA 3.0 5.6 CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:L
NVD 2.0 4.6 AV:L/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.