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Fencer Intel
high 7.1

CVE-2018-21139 json

Certain NETGEAR devices are affected by disclosure of sensitive information.

published 2020-04-23 6 y ago modified 2026-06-17 4 mo ago also EUVD-2018-13657

cvss
7.1
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.2%
EPSS 1.2% chance of exploitation in 30 days, percentile 68%
public exploits
0
none known

Summary

Certain NETGEAR devices are affected by disclosure of sensitive information. This affects D1500 before 1.0.0.27, D500 before 1.0.0.27, D6100 before 1.0.0.58, D6200 before 1.1.00.30, D6220 before 1.0.0.46, D6400 before 1.0.0.82, D7000 before 1.0.1.68, D7000v2 before 1.0.0.51, D7800 before 1.0.1.42, D8500 before 1.0.3.42, DC112A before 1.0.0.40, DGN2200Bv4 before 1.0.0.102, DGN2200v4 before 1.0.0.102, JNR1010v2 before 1.1.0.54, JR6150 before 1.0.1.18, JWNR2010v5 before 1.1.0.54, PR2000 before 1.0.0.24, R6020 before 1.0.0.34, R6050 before 1.0.1.18, R6080 before 1.0.0.34, R6100 before 1.0.1.22, R6120 before 1.0.0.42, R6220 before 1.1.0.68, R6250 before 1.0.4.30, R6300v2 before 1.0.4.32, R6400 before 1.0.1.44, R6400v2 before 1.0.2.60, R6700 before 1.0.1.48, R6700v2 before 1.2.0.24, R6800 before 1.2.0.24, R6900 before 1.0.1.48, R6900P before 1.3.1.44, R6900v2 before 1.2.0.24, R7000 before 1.0.9.34, R7000P before 1.3.1.44, R7100LG before 1.0.0.48, R7300 before 1.0.0.68, R7500 before 1.0.0.124, R7500v2 before 1.0.3.38, R7900 before 1.0.2.16, R7900P before 1.4.1.24, R8000 before 1.0.4.18, R8000P before 1.4.1.24, R8300 before 1.0.2.122, R8500 before 1.0.2.122, WN3000RP before 1.0.0.68, WN3000RPv2 before 1.0.0.68, WNDR3400v3 before 1.0.1.18, WNDR3700v4 before 1.0.2.102, WNDR3700v5 before 1.1.0.54, WNDR4300v1 before 1.0.2.104, WNDR4300v2 before 1.0.0.56, WNDR4500v3 before 1.0.0.56, WNR1000v4 before 1.1.0.54, WNR2020 before 1.1.0.54, WNR2050 before 1.1.0.54, and WNR3500Lv2 before 1.2.0.54.

Patch / fix

  • netgear d1500_firmware 1.0.0.27
  • netgear d500_firmware 1.0.0.27
  • netgear d6100_firmware 1.0.0.58
  • netgear d6200_firmware 1.1.00.30
  • netgear d6220_firmware 1.0.0.46
  • netgear d6400_firmware 1.0.0.82
  • netgear d7000_firmware 1.0.0.51, 1.0.1.68
  • netgear d7800_firmware 1.0.1.42
  • netgear d8500_firmware 1.0.3.42
  • netgear dc112a_firmware 1.0.0.40
  • netgear dgn2200b_firmware 1.0.0.102
  • netgear dgn2200_firmware 1.0.0.102
  • netgear jnr1010_firmware 1.1.0.54
  • netgear jr6150_firmware 1.0.1.18
  • netgear jwnr2010_firmware 1.1.0.54
  • netgear pr2000_firmware 1.0.0.24
  • netgear r6020_firmware 1.0.0.34
  • netgear r6050_firmware 1.0.1.18
  • netgear r6080_firmware 1.0.0.34
  • netgear r6100_firmware 1.0.1.22

Exploit prediction

1.19% chance of exploitation in the next 30 days, higher than 68% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.0 7.1 CVSS:3.0/AC:L/AV:A/A:N/C:H/I:L/PR:N/S:U/UI:N
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CNA 3.0 7.1 CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:P/I:N/A:N

Classification

Weakness
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

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.