CVE-2025-40566

HIGH

SIMATIC PCS neo < V4.1 Update 3 and < V5.0 Update 1 - Insufficient Session Expiration

Title source: llm
STIX 2.1

Description

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.

References (1)

Core 1

Scores

CVSS v3 8.8
EPSS 0.0037
EPSS Percentile 29.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-613
Status published
Products (4)
siemens/simatic_pcs_neo 4.1 update_1 (2 CPE variants)
siemens/simatic_pcs_neo 5.0
siemens/simatic_pcs_neo < 4.1
siemens/simatic_pcs_neo < 5.0
Published May 13, 2025
Tracked Since Feb 18, 2026