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Fencer Vulns
medium 4.5

CVE-2021-45530 json

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

published 2021-12-26 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-32296

cvss
4.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.9%
EPSS 0.9% chance of exploitation in 30 days, percentile 59%
public exploits
0
none known

Summary

Certain NETGEAR devices are affected by a buffer overflow by an authenticated user. This affects R7000 before 1.0.11.126, R7960P before 1.4.2.84, R8000 before 1.0.4.74, RAX200 before 1.0.4.120, R8000P before 1.4.2.84, RAX20 before 1.0.2.82, RAX45 before 1.0.2.82, RAX80 before 1.0.4.120, R7900P before 1.4.2.84, RAX15 before 1.0.2.82, RAX50 before 1.0.2.82, and RAX75 before 1.0.4.120.

Patch / fix

  • netgear r7000_firmware 1.0.11.126
  • netgear r7000p_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 rax20_firmware 1.0.2.82
  • netgear rax200_firmware 1.0.4.120
  • netgear rax45_firmware 1.0.2.82
  • netgear rax15_firmware 1.0.2.82
  • netgear rax75_firmware 1.0.4.120
  • netgear rax80_firmware 1.0.4.120
  • netgear rax50_firmware 1.0.2.82

Exploit prediction

0.90% chance of exploitation in the next 30 days, higher than 59% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 4.5 CVSS:3.1/AC:L/AV:A/A:H/C:N/I:N/PR:H/S:U/UI:N
CNA 3.1 4.5 CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:N/I:N/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-120 Buffer Copy without Checking Size of Input

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.