CVE-2025-41672CWE-1188

WAGO: Vulnerability in WAGO Device Sphere

Critical · published July 7, 2025

CVSS v3.1
10.0
EPSS
0%
Percentile
32.2
In the wild
Unconfirmed
What it is

🚨 A remote attacker could exploit default certificates to generate JWT tokens, gaining full access to your systems! 🔥 Imagine a restaurant where anyone can stroll in because the front door is always open and the check for reservation names has been skipped. This vulnerability allows attackers to bypass authentication and enter your systems as if they were on the guest list. If left unaddressed, an attacker could roam freely through your network, accessing sensitive data and controlling devices without breaking a sweat. This could lead to devastating consequences, from data breaches to unauthorized actions that compromise your entire setup.

Put simply

Imagine a restaurant where anyone can stroll in because the front door is always open and the check for reservation names has been skipped. This vulnerability allows attackers to bypass authentication and enter your systems as if they were on the guest list. This vulnerability arises from the use of default certificates, enabling unauthenticated attackers to generate valid JWT tokens. By exploiting this flaw, they can gain unauthorized access to the tool and all connected devices without any authentication.

What to do

If left unaddressed, an attacker could roam freely through your network, accessing sensitive data and controlling devices without breaking a sweat. This could lead to devastating consequences, from data breaches to unauthorized actions that compromise your entire setup. To mitigate this risk, immediately replace any default certificates with secure, custom ones and enforce strict authentication measures. Regularly audit your token generation process to ensure no unauthorized access can occur. You've got this! By following these steps, you'll shore up your defenses in no time! 🛡️

The record
Technical detail
CVSS v3.1
10.0 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00392 · 32.2th percentile
Weakness
CWE-1188 · Initialization of a Resource with an Insecure Default
Published
2025-07-07T06:17Z
EPSS history
Timeline
  • 07 JUL 06:17Z
    WAGO: Vulnerability in WAGO Device Sphere
    cvelistv5