Insufficient Session Expiration in SIMATIC PCS neo - CVE-2025-40566
Published: May 20, 2025
Vulnerability identifier: #VU109456
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2025-40566
CWE-ID: CWE-613
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Siemens
Affected software:
SIMATIC PCS neo
SIMATIC PCS neo
Detailed vulnerability description
The vulnerability allows a remote attacker to compromise the target system.
The vulnerability exists due to insufficient session expiration issue. A remote attacker can obtain or guess session token and re-use a legitimate user's session even after logout.
How to mitigate CVE-2025-40566
Install updates from vendor's website.