CVE-2023-30280

Buffer Overflow vulnerability found in Netgear R6900 v.1.0.2.26, R6700v3 v.1.0.4.128, R6700 v.1.0.0.26 allows a remote attacker to execute arbitrary code and…

Critical · published April 26, 2023

CVSS v3.1
9.8
EPSS
1%
Percentile
68.8
In the wild
Unconfirmed
What it is

🔥 A single mismanaged parameter is all it takes to unleash chaos on your Netgear router! Think of this vulnerability like a water pipe that bursts because it's overstuffed with too much pressure — if the system can't handle it, everything could come crashing down. A remote attacker can send just the right input to cause a flood of unwanted code execution. An attacker could exploit this buffer overflow to take full control of your router, shutting it down or even hijacking it to launch further attacks. This is not just a nuisance; it could lead to total denial of service, disrupting your entire home network and leaving you vulnerable to additional threats.

Put simply

Think of this vulnerability like a water pipe that bursts because it's overstuffed with too much pressure — if the system can't handle it, everything could come crashing down. A remote attacker can send just the right input to cause a flood of unwanted code execution. The vulnerability allows for arbitrary code execution via the `getInputData` parameter on the `fwSchedule.cgi` page of the Netgear R6900 v.1.0.2.26, R6700v3 v.1.0.4.128, and R6700 v.1.0.0.26, leading to a buffer overflow that can crash the device or open it up for exploitation.

What to do

An attacker could exploit this buffer overflow to take full control of your router, shutting it down or even hijacking it to launch further attacks. This is not just a nuisance; it could lead to total denial of service, disrupting your entire home network and leaving you vulnerable to additional threats. Immediately update your firmware to the latest version provided by Netgear. Ensure to check their support page for any new patches and consider disabling remote access features if they're not needed. Regularly monitor your router for unusual activity. You can tackle this vulnerability head-on! Update your firmware and safeguard your network like the security hero you are! 🛡️

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.01235 · 68.8th percentile
Published
2023-04-26T00:00Z
EPSS history
Timeline
  • 26 APR 00:00Z
    Buffer Overflow vulnerability found in Netgear R6900 v.1.0.2.26, R6700v3 v.1.0.4.128, R6700 v.1.0.0.26 allows a remote attacker to execute arbitrary code and…
    cvelistv5