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Fencer Vulns
medium 6.1

CVE-2021-45525 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-2021-32291

cvss
6.1
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 EX7000 before 1.0.1.80, R6400 before 1.0.1.50, R6400v2 before 1.0.4.118, R6700 before 1.0.2.8, R6700v3 before 1.0.4.118, R6900 before 1.0.2.8, R6900P before 1.3.2.124, R7000 before 1.0.9.88, R7000P before 1.3.2.124, R7900 before 1.0.3.18, R7900P before 1.4.1.50, R8000 before 1.0.4.46, R8000P before 1.4.1.50, RAX80 before 1.0.1.56, and WNR3500Lv2 before 1.2.0.62.

Patch / fix

  • netgear ex7000_firmware 1.0.1.80
  • netgear r6400_firmware 1.0.1.50
  • netgear r6400v2_firmware 1.0.4.118
  • netgear r6700_firmware 1.0.2.8
  • netgear r6700v3_firmware 1.0.4.118
  • netgear r6900_firmware 1.0.2.8
  • netgear r6900p_firmware 1.3.2.124
  • netgear r7000_firmware 1.0.9.88
  • netgear r7000p_firmware 1.3.2.124
  • 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 rax80_firmware 1.0.1.56
  • netgear wnr3500lv2_firmware 1.2.0.62

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 6.1 CVSS:3.1/AC:L/AV:A/A:N/C:H/I:H/PR:H/S:U/UI:N
CNA 3.1 6.1 CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
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.