CVE-2019-18937

eQ-3 Homematic CCU2 2.47.20 and CCU3 3.47.18 with the Script Parser AddOn through 1.8 installed allow Remote Code Execution by unauthenticated attackers with…

published November 14, 2019

CVSS
—
EPSS
34%
Percentile
98.4
In the wild
Unconfirmed
What it is

🚨 An unauthenticated POST request can trigger this vulnerability, allowing potential attackers to run arbitrary TCL scripts on your eQ-3 Homematic devices! ⚡ Think of it like a restaurant where anyone can just walk into the kitchen without a staff pass and start cooking — that’s exactly what this vulnerability allows attackers to do with your smart home! An attacker could exploit this flaw to execute any command on your device, potentially compromising your whole smart home setup. Imagine them fiddling with your heating, lights, or security system — it could lead to all sorts of chaos!

Put simply

Think of it like a restaurant where anyone can just walk into the kitchen without a staff pass and start cooking — that’s exactly what this vulnerability allows attackers to do with your smart home! The CVE-2019-18937 vulnerability enables remote code execution through the exec.cgi script in the eQ-3 Homematic CCU2 and CCU3 devices, allowing execution of TCL scripts from an unverified HTTP POST request.

What to do

An attacker could exploit this flaw to execute any command on your device, potentially compromising your whole smart home setup. Imagine them fiddling with your heating, lights, or security system — it could lead to all sorts of chaos! To remediate this issue, ensure you update your eQ-3 Homematic device to at least version 2.47.21 for CCU2 or 3.47.19 for CCU3. Additionally, consider restricting access to the web interface to trusted networks only. 🛡️ You can tackle this! Update your device and lock it down to keep your smart home safe and sound. You've got this! ✨

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.33840 · 98.4th percentile
Published
2019-11-14T18:50Z
EPSS history
Timeline
  • 14 NOV 18:50Z
    eQ-3 Homematic CCU2 2.47.20 and CCU3 3.47.18 with the Script Parser AddOn through 1.8 installed allow Remote Code Execution by unauthenticated attackers with…
    cvelistv5