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Fencer Vulns
high 8.4

CVE-2021-45547 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-2021-32313

cvss
8.4
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.5%
EPSS 1.5% chance of exploitation in 30 days, percentile 74%
public exploits
0
none known

Summary

Certain NETGEAR devices are affected by command injection by an authenticated user. This affects R7850 before 1.0.5.74, R7900P before 1.4.2.84, R7960P before 1.4.2.84, R8000 before 1.0.4.74, R8000P before 1.4.2.84, RAX200 before 1.0.4.120, RAX75 before 1.0.4.120, RAX80 before 1.0.4.120, RBK752 before 3.2.17.12, RBK852 before 3.2.17.12, RBR750 before 3.2.17.12, RBR850 before 3.2.17.12, RBS750 before 3.2.17.12, and RBS850 before 3.2.17.12.

Patch / fix

  • netgear r7850_firmware 1.0.5.74
  • netgear r7900p_firmware 1.4.2.84
  • netgear r7960p_firmware 1.4.2.84
  • netgear r8000_firmware 1.0.4.74
  • netgear r8000p_firmware 1.4.2.84
  • netgear rax200_firmware 1.0.4.120
  • netgear rax75_firmware 1.0.4.120
  • netgear rax80_firmware 1.0.4.120
  • netgear rbk852_firmware 3.2.17.12
  • netgear rbr850_firmware 3.2.17.12
  • netgear rbs850_firmware 3.2.17.12
  • netgear rbk752_firmware 3.2.17.12
  • netgear rbr750_firmware 3.2.17.12
  • netgear rbs750_firmware 3.2.17.12

Exploit prediction

1.48% chance of exploitation in the next 30 days, higher than 74% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 8.4 CVSS:3.1/AC:L/AV:A/A:H/C:H/I:H/PR:H/S:C/UI:N
CNA 3.1 8.4 CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
NVD 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 6.5 AV:N/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.