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Fencer Vulns
high 7.1

CVE-2021-45658 json

Certain NETGEAR devices are affected by server-side injection.

published 2021-12-26 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-32424

cvss
7.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.8%
EPSS 0.8% chance of exploitation in 30 days, percentile 58%
public exploits
0
none known

Summary

Certain NETGEAR devices are affected by server-side injection. This affects D7800 before 1.0.1.58, DM200 before 1.0.0.66, EX2700 before 1.0.1.56, EX6150v2 before 1.0.1.86, EX6100v2 before 1.0.1.86, EX6200v2 before 1.0.1.78, EX6250 before 1.0.0.110, EX6410 before 1.0.0.110, EX6420 before 1.0.0.110, EX6400v2 before 1.0.0.110, EX7300 before 1.0.2.144, EX6400 before 1.0.2.144, EX7320 before 1.0.0.110, EX7300v2 before 1.0.0.110, R7500v2 before 1.0.3.48, R7800 before 1.0.2.68, R8900 before 1.0.5.2, R9000 before 1.0.5.2, RAX120 before 1.0.1.90, RBK40 before 2.5.1.16, RBK20 before 2.5.1.16, RBR20 before 2.5.1.16, RBS20 before 2.5.1.16, RBK50 before 2.5.1.16, RBR50 before 2.5.1.16, RBS50 before 2.5.1.16, RBS50Y before 2.6.1.40, WN3000RPv2 before 1.0.0.78, WN3000RPv3 before 1.0.2.80, WNR2000v5 before 1.0.0.72, XR500 before 2.3.2.56, and XR700 before 1.0.1.20.

Patch / fix

  • netgear d7800_firmware 1.0.1.58
  • netgear dm200_firmware 1.0.0.66
  • netgear ex2700_firmware 1.0.1.56
  • netgear ex6150v2_firmware 1.0.1.86
  • netgear ex6100v2_firmware 1.0.1.86
  • netgear ex6200v2_firmware 1.0.1.78
  • netgear ex6250_firmware 1.0.0.110
  • netgear ex6410_firmware 1.0.0.110
  • netgear ex6420_firmware 1.0.0.110
  • netgear ex6400v2_firmware 1.0.0.110
  • netgear ex7300_firmware 1.0.2.144
  • netgear ex6400_firmware 1.0.2.144
  • netgear ex7320_firmware 1.0.0.110
  • netgear ex7300v2_firmware 1.0.0.110
  • netgear r7500v2_firmware 1.0.3.48
  • netgear r7800_firmware 1.0.2.68
  • netgear r8900_firmware 1.0.5.2
  • netgear r9000_firmware 1.0.5.2
  • netgear rax120_firmware 1.0.1.90
  • netgear rbk40_firmware 2.5.1.16

Exploit prediction

0.85% chance of exploitation in the next 30 days, higher than 58% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.1 CVSS:3.1/AC:L/AV:L/A:N/C:H/I:H/PR:L/S:U/UI:N
CNA 3.1 7.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness
  • CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component

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.