Input validation error in SIMATIC CN 4100 - CVE-2025-40593
Published: July 15, 2025
Vulnerability identifier: #VU112902
CSH Severity: Medium
CVSS v4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2025-40593
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to the affected application allows to control the device by storing arbitrary files in the SFTP folder of the device. A remote user can pass specially crafted input to the application and perform a denial of service (DoS) attack.
Affected software
SIMATIC CN 4100
How to mitigate CVE-2025-40593
Install updates from vendor's website.
SIMATIC CN 4100 - update to 4.0