CVE-2025-40566

CriticalCVSS 9.8/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-613

Affected software

VendorProductVersions
SiemensSIMATIC PCS neo V4.1< V4.1 Update 3
SiemensSIMATIC PCS neo V5.0< V5.0 Update 1

References

Timeline

Published
May 13, 2025
Last modified
Jun 17, 2026
NVD status
Analyzed

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CVE-2025-40566: Critical severity, CVSS 9.8 | Vulnix