CVE-2021-21820CWE-798

A hard-coded password vulnerability exists in the Libcli Test Environment functionality of D-LINK DIR-3040 1.13B03

Critical · published July 16, 2021

CVSS v3.0
10.0
EPSS
3%
Percentile
87.1
In the wild
Unconfirmed
What it is

🚨 A hard-coded password in the D-LINK DIR-3040 could hand over the keys to your network! 🔥 Think of it like a restaurant where the chef leaves the secret recipe book unlocked and on the counter — any customer can just walk in and start cooking whatever they want! An attacker can exploit this vulnerability through specially crafted network requests, potentially leading to full code execution. This means they can take control of your device, snoop on your network traffic, or even access sensitive data — a nightmare scenario for any network security!

Put simply

Think of it like a restaurant where the chef leaves the secret recipe book unlocked and on the counter — any customer can just walk in and start cooking whatever they want! This vulnerability exists in the Libcli Test Environment of D-LINK DIR-3040 firmware version 1.13B03, allowing attackers to execute arbitrary code by leveraging a hard-coded password in network requests.

What to do

An attacker can exploit this vulnerability through specially crafted network requests, potentially leading to full code execution. This means they can take control of your device, snoop on your network traffic, or even access sensitive data — a nightmare scenario for any network security! Immediately patch your D-LINK DIR-3040 to the latest firmware version to eliminate this vulnerability. It's crucial to disable any unnecessary features like the Test Environment to reduce risk, and review network configurations for any unfamiliar activity. You've got this! Just follow these steps, and you'll be well on your way to securing your network! 🛡️

The record
Technical detail
CVSS v3.0
10.0 · CRITICAL
Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.02962 · 87.1th percentile
Weakness
CWE-798 · Use of Hard-coded Credentials
Published
2021-07-16T10:24Z
EPSS history
Timeline
  • 16 JUL 10:24Z
    A hard-coded password vulnerability exists in the Libcli Test Environment functionality of D-LINK DIR-3040 1.13B03
    cvelistv5