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4.9Medium

Netgear Rax20 Firmware

CVE-2026-11736

A stack-based buffer overflow vulnerability affects certain NETGEAR models allowing an authenticated admin user to make unauthorized modification to router software and functionality.

What this means for your business

  • It affects Netgear Rax20 Firmware. It matters if your company, or a supplier that handles your data, runs it.
  • An attacker can use it remotely, over a network, with an administrator login, and without anyone at your company clicking anything.

What to do

  1. 1Check whether your company or your suppliers run Netgear Rax20 Firmware, and which version. The affected versions are listed further down this page.
  2. 2If you do, apply the vendor's fix. A patch or vendor advisory has been published.

Not sure if your company is exposed?

Fastnexa’s certified penetration testers can check whether attackers could use this flaw, or others like it, against your websites, apps and network. The full test is free for our first 10 founding clients until 31 December 2026.

Check if you’re exposedBook a call

Scoring

CVSS
4.9 (v3.1)
Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
CVSS v4
1.9
Weakness
CWE-20
Assigned by
a2826606-91e7-4eb6-899e-8484bd4575d5

Dates

Published
2026-08-11
Last modified
2026-09-09
Sources
NVD

Affected products

  • Netgear Rax20 Firmwareall versions
  • Netgear Rax20all versions
  • Netgear Rax35v2 Firmware- 1.0.16.132
  • Netgear Rax35v2all versions
  • Netgear Rax41 Firmwareall versions
  • Netgear Rax41all versions
  • Netgear Rax41v2 Firmware- 1.1.4.28
  • Netgear Rax41v2all versions
  • Netgear Rax42 Firmwareall versions
  • Netgear Rax42all versions
  • Netgear Rax42v2 Firmware- 1.1.4.28
  • Netgear Rax42v2all versions

As listed in the NVD configuration data. Not a statement about your estate.

References