CVE-2021-45527

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

Critical · published December 26, 2021

CVSS v3.1
9.6
EPSS
1%
Percentile
67.1
In the wild
Unconfirmed
What it is

🚨 An authenticated user can trigger a buffer overflow in multiple NETGEAR devices, leading to potentially devastating control over the router! 🔥 Think of your router like a busy restaurant kitchen. If a chef (authenticated user) can pile too many orders into a single slot, it can overflow, causing chaos – like a pot boiling over with no way to contain it! In this case, an attacker could exploit this vulnerability to execute arbitrary code, essentially taking over the router and gaining access to the entire network. That means they could intercept data, change settings, or even introduce malware – leaving your devices vulnerable and your data at risk!

Put simply

Think of your router like a busy restaurant kitchen. If a chef (authenticated user) can pile too many orders into a single slot, it can overflow, causing chaos – like a pot boiling over with no way to contain it! This buffer overflow vulnerability arises when certain NETGEAR models process inputs without proper size checks, allowing an authenticated user to manipulate the device's memory, which could lead to remote code execution.

What to do

In this case, an attacker could exploit this vulnerability to execute arbitrary code, essentially taking over the router and gaining access to the entire network. That means they could intercept data, change settings, or even introduce malware – leaving your devices vulnerable and your data at risk! To secure your network, update your device firmware immediately to the latest version: 1.0.0.68 for D6220, 1.0.0.102 for D6400, and so on for other affected models. It’s crucial to check NETGEAR’s website for a comprehensive list of updates and ensure your router is protected! You've got this! With these updates, you're one step closer to being a security hero! 🛡️

The record
Technical detail
CVSS v3.1
9.6 · CRITICAL
Vector
CVSS:3.1/AC:L/AV:A/A:H/C:H/I:H/PR:N/S:C/UI:N
CVSS v4.0
Not supplied
EPSS
0.01166 · 67.1th percentile
Published
2021-12-26T00:58Z
EPSS history
Timeline
  • 26 DEC 00:58Z
    Certain NETGEAR devices are affected by a buffer overflow by an authenticated user
    cvelistv5