Skip to content
Fencer Vulns
medium 6.6

CVE-2021-45550 json

Certain NETGEAR devices are affected by command injection by an authenticated user.

published 2021-12-26 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-32316

cvss
6.6
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 47%
public exploits
0
none known

Summary

Certain NETGEAR devices are affected by command injection by an authenticated user. This affects D3600 before 1.0.0.76, D6000 before 1.0.0.78, D6100 before 1.0.0.63, D6220 before 1.0.0.52, D6400 before 1.0.0.86, D7800 before 1.0.1.56, D8500 before 1.0.3.44, DGN2200Bv4 before 1.0.0.109, DGN2200v4 before 1.0.0.110, R6250 before 1.0.4.34, R6300v2 before 1.0.4.34, R6400 before 1.0.1.46, R6400v2 before 1.0.2.66, R6700 before 1.0.2.6, R6700v3 before 1.0.2.66, R6900 before 1.0.2.4, R6900P before 1.3.1.64, R7000 before 1.0.9.42, R7000P before 1.3.1.64, R7100LG before 1.0.0.50, R7300 before 1.0.0.70, R7900 before 1.0.3.8, R7900P before 1.4.1.30, R8000 before 1.0.4.28, R8000P before 1.4.1.30, R8300 before 1.0.2.128, R8500 before 1.0.2.128, WNDR3400v3 before 1.0.1.24, WNR3500Lv2 before 1.2.0.62, and XR500 before 2.3.2.56.

Patch / fix

  • netgear d3600_firmware 1.0.0.76
  • netgear d6000_firmware 1.0.0.78
  • netgear d6100_firmware 1.0.0.63
  • netgear d6220_firmware 1.0.0.52
  • netgear d6400_firmware 1.0.0.86
  • netgear d7800_firmware 1.0.1.56
  • netgear d8500_firmware 1.0.3.44
  • netgear dgn2200b_firmware 1.0.0.109
  • netgear dgn2200_firmware 1.0.0.110
  • netgear r6250_firmware 1.0.4.34
  • netgear r6300_firmware 1.0.4.34
  • netgear r6400_firmware 1.0.1.46, 1.0.2.66
  • netgear r6700_firmware 1.0.2.6, 1.0.2.66
  • netgear r6900_firmware 1.0.2.4
  • netgear r6900p_firmware 1.3.1.64
  • netgear r7000_firmware 1.0.9.42
  • netgear r7000p_firmware 1.3.1.64
  • netgear r7100lg_firmware 1.0.0.50
  • netgear r7300_firmware 1.0.0.70
  • netgear r7900_firmware 1.0.3.8

Exploit prediction

0.57% chance of exploitation in the next 30 days, higher than 47% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 6.6 CVSS:3.1/AC:L/AV:A/A:H/C:H/I:H/PR:H/S:U/UI:R
CNA 3.1 6.6 CVSS:3.1/AV:A/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H
NVD 3.1 6.8 CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 5.2 AV:A/AC:L/Au:S/C:P/I:P/A:P

Classification

Weakness
  • CWE-77 Improper Neutralization of Special Elements used in a Command

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.