CVE-2023-39454CWE-120

Buffer overflow vulnerability exists in ELECOM wireless LAN routers, which may allow an unauthenticated attacker to execute arbitrary code

High · published August 18, 2023

CVSS v3.0
8.8
EPSS
1%
Percentile
60.6
In the wild
Unconfirmed
What it is

⚡ Just one rogue input can trigger a devastating overflow in ELECOM routers! 🚨 Think of this as a shipping container that can hold a set limit of items, but if someone sneaks in too much cargo, it spills over and causes chaos — the buffer overflow allows attackers to unleash arbitrary code as if the container burst open and let unrestricted access loose! An unauthenticated attacker could potentially execute any code of their choosing on the router — this means they could hijack your network, intercept data, or wreak havoc on connected devices. The fallout could be catastrophic for sensitive data and your overall network integrity.

Put simply

Think of this as a shipping container that can hold a set limit of items, but if someone sneaks in too much cargo, it spills over and causes chaos — the buffer overflow allows attackers to unleash arbitrary code as if the container burst open and let unrestricted access loose! This buffer overflow vulnerability in ELECOM wireless LAN routers allows attackers to exploit an unchecked input that exceeds the allocated memory, resulting in arbitrary code execution without needing any authentication.

What to do

An unauthenticated attacker could potentially execute any code of their choosing on the router — this means they could hijack your network, intercept data, or wreak havoc on connected devices. The fallout could be catastrophic for sensitive data and your overall network integrity. To protect your network, immediate patching is critical — update your ELECOM router firmware to the latest version. Additionally, disable remote management features if they are not in use, and ensure strong password policies are enforced for all devices. You've got this! By following these steps, you can secure your network and keep those pesky intruders out! 🛡️

The record
Technical detail
CVSS v3.0
8.8 · HIGH
Vector
CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00943 · 60.6th percentile
Weakness
CWE-120 · Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Published
2023-08-18T09:41Z
EPSS history
Timeline
  • 18 AUG 09:41Z
    Buffer overflow vulnerability exists in ELECOM wireless LAN routers, which may allow an unauthenticated attacker to execute arbitrary code
    cvelistv5