CVE-2025-40566 HIGH

CVE-2025-40566

Vendor Siemens
Product SIMATIC PCS neo V4.1
Weakness CWE-613 · Insufficient session expiration
Published May 13, 2025
Last update May 13, 2025

CVSS base score

8.8/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

What the vulnerability does

01Description

A vulnerability has been identified in SIMATIC PCS neo V4.1 (All versions < V4.1 Update 3), SIMATIC PCS neo V5.0 (All versions < V5.0 Update 1). Affected products do not correctly invalidate user sessions upon user logout. This could allow a remote unauthenticated attacker, who has obtained the session token by other means, to re-use a legitimate user's session even after logout.

Key dates

02Disclosure timeline

May 13, 2025 CVE published
May 13, 2025 Record updated