Insufficient Session Expiration in SIMATIC PCS neo - CVE-2025-40566
Published: May 20, 2025
Vulnerability identifier: #VU109456
CSH Severity: High
CVSS v4: 8.7 [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]
CVE-ID: CVE-2025-40566
CWE-ID: CWE-613
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
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.
Affected software
SIMATIC PCS neo
How to mitigate CVE-2025-40566
Install updates from vendor's website.
SIMATIC PCS neo - addressed in versions 4.1 Update 3, 5.0 Update 1