Skip to content
Fencer Vulns
high 8.1

CVE-2021-45528 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-2021-32294

cvss
8.1
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 a buffer overflow by an authenticated user. This affects R6300v2 before 1.0.4.52, R6400 before 1.0.1.52, R6900 before 1.0.2.8, R7000 before 1.0.9.88, R7900 before 1.0.3.18, R8000 before 1.0.4.46, R7900P before 1.4.1.50, R8000P before 1.4.1.50, RAX75 before 1.0.3.88, RAX80 before 1.0.3.88, and WNR3500Lv2 before 1.2.0.62.

Patch / fix

  • netgear r6400_firmware 1.0.1.52
  • netgear r6900_firmware 1.0.2.8
  • netgear r7000_firmware 1.0.9.88
  • netgear r7900_firmware 1.0.3.18
  • netgear r7900p_firmware 1.4.1.50
  • netgear r8000_firmware 1.0.4.46
  • netgear r8000p_firmware 1.4.1.50
  • netgear rax75_firmware 1.0.3.88
  • netgear rax80_firmware 1.0.3.88
  • netgear wnr3500lv2_firmware 1.2.0.62

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 8.1 CVSS:3.1/AC:L/AV:L/A:H/C:L/I:H/PR:H/S:C/UI:N
CNA 3.1 8.1 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:H/A:H
NVD 3.1 7.2 CVSS:3.1/AV:N/AC:L/PR:H/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.