CVE-2024-45386: siemens simatic pcs neo v4.0 Insufficient Session Expiration
Vulnerability summary
CVE-2024-45386 is a high (CVSS 8.8) Insufficient Session Expiration vulnerability in siemens simatic pcs neo v4.0. EPSS estimates a 0.56% chance of exploitation in the next 30 days, higher than 45.1% of scored vulnerabilities.
Timeline
- 11-02-2025PublishedVulnerability first disclosed.
- 11-02-2025Last modifiedVulnerability information updated.
Description
A vulnerability has been identified in SIMATIC PCS neo V4.0 (All versions), SIMATIC PCS neo V4.1 (All versions < V4.1 Update 2), SIMATIC PCS neo V5.0 (All versions < V5.0 Update 1), SIMOCODE ES V19 (All versions < V19 Update 1), SIRIUS Safety ES V19 (TIA Portal) (All versions < V19 Update 1), SIRIUS Soft Starter ES V19 (TIA Portal) (All versions < V19 Update 1), TIA Administrator (All versions < V3.0.4). 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.
CVSS metrics
4 scores · 2 sources · 2 versions- NVDNIST8.7HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- NVDNIST8.8HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.56%
Chance of exploitation in the next 30 days
Percentile
45%
Versus all other CVEs
30-day change
0.00 pp
From 0.56% on 18-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Siemens7 products
- simatic pcs neo v4.0All versions (No fix recorded)
- simatic pcs neo v4.1< V4.1 Update 2
- simatic pcs neo v5.0< V5.0 Update 1
- simocode es v19< V19 Update 1
- sirius safety es v19 (tia portal)< V19 Update 1
1 vendor · 7 products