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High severity8.8NVD Advisory· Published May 13, 2025· Updated Jun 17, 2026

CVE-2025-40566

CVE-2025-40566

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

8
  • Siemens Foundation/PCS neocpe-rescue8 versions
    0+ 7 more
    • (no CPE)range: 0
    • (no CPE)range: 0
    • cpe:2.3:a:siemens:simatic_pcs_neo:*:*:*:*:*:*:*:*range: <4.1
    • cpe:2.3:a:siemens:simatic_pcs_neo:*:-:*:*:*:*:*:*range: <5.0
    • cpe:2.3:a:siemens:simatic_pcs_neo:4.1:update_1:*:*:*:*:*:*
    • cpe:2.3:a:siemens:simatic_pcs_neo:4.1:update_2:*:*:*:*:*:*
    • cpe:2.3:a:siemens:simatic_pcs_neo:5.0:-:*:*:*:*:*:*
    • (no CPE)range: < V4.1 Update 3, < V5.0 Update 1

Patches

Vulnerability mechanics

References

1

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