CVE-2025-40566

Published May 13, 2025 CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2025-14680 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.
History
Type Values Removed Values Added
First Time appeared Siemens
Siemens simatic Pcs Neo
CPEs cpe:2.3:a:siemens:simatic_pcs_neo:*:*:*:*:*:*:*:*
cpe:2.3:a:siemens:simatic_pcs_neo:*:-:*:*:*:*:*:*
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:-:*:*:*:*:*:*
Vendors & Products Siemens
Siemens simatic Pcs Neo
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Weaknesses CWE-613
References
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 8.7, 'vector': '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
siemens
Published
Updated
May 13, 2025, 6:47 PM
Reserved
Apr 16, 2025, 8:20 AM
Status
Analyzed
Published
May 13, 2025, 10:15 AM
Modified
Jun 17, 2026, 9:21 AM