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Fencer Vulns
high 7.5

CVE-2025-12946 json

Improper input validation in NETGEAR Nighthawk routers

published 2025-12-09 10 mo ago modified 2026-10-07 32 d ago also EUVD-2025-202283

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 22%
public exploits
0
none known

Summary

A vulnerability in the speedtest feature of affected NETGEAR Nighthawk routers, caused by improper input validation, can allow attackers on the router's WAN side, using attacker-in-the-middle techniques (MiTM) to manipulate DNS responses and execute commands when speedtests are run.

This issue affects RS700: through 1.0.7.82; RAX54Sv2 : before V1.1.6.36; RAX41v2: before V1.1.6.36; RAX50: before V1.2.14.114; RAXE500: before V1.2.14.114; RAX41: before V1.0.17.142; RAX43: before V1.0.17.142; RAX35v2: before V1.0.17.142; RAXE450: before V1.2.14.114; RAX43v2: before V1.1.6.36; RAX42: before V1.0.17.142; RAX45: before V1.0.17.142; RAX50v2: before V1.1.6.36; MR90: before V1.0.2.46; MS90: before V1.0.2.46; RAX42v2: before V1.1.6.36; RAX49S: before V1.1.6.36.

Patch / fix

  • NETGEAR RAX54Sv2 V1.1.6.36
  • NETGEAR RAX41v2 V1.1.6.36
  • NETGEAR RAX50 V1.2.14.114
  • NETGEAR RAXE500 V1.2.14.114
  • NETGEAR RAX41 V1.0.17.142
  • NETGEAR RAX43 V1.0.17.142
  • NETGEAR RAX35v2 V1.0.17.142
  • NETGEAR RAXE450 V1.2.14.114
  • NETGEAR RAX43v2 V1.1.6.36
  • NETGEAR RAX42 V1.0.17.142
  • NETGEAR RAX45 V1.0.17.142
  • NETGEAR RAX50v2 V1.1.6.36
  • NETGEAR MR90 V1.0.2.46
  • NETGEAR RAX42v2 V1.1.6.36
  • NETGEAR RAX49S V1.1.6.36
  • NETGEAR MS90 V1.0.2.46

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
10 mo ago

Exploit prediction

0.29% chance of exploitation in the next 30 days, higher than 22% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 4.0 4.4 CVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/S:N/AU:N/R:A/V:D/RE:M/U:Amber
CNA 4.0 4.4 CVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:N/AU:N/R:A/V:D/RE:M/U:Amber
NVD 3.1 7.5 CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

  • NETGEAR RS700
  • NETGEAR RAX54Sv2
  • NETGEAR RAX41v2
  • NETGEAR RAX50
  • NETGEAR RAXE500
  • NETGEAR RAX41
  • NETGEAR RAX43
  • NETGEAR RAX35v2
  • NETGEAR RAXE450
  • NETGEAR RAX43v2
  • NETGEAR RAX42
  • NETGEAR RAX45
  • NETGEAR RAX50v2
  • NETGEAR MR90
  • NETGEAR RAX42v2
  • NETGEAR RAX49S
  • NETGEAR MS90

Classification

Weakness
  • CWE-20 Improper Input Validation

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.