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Fencer Vulns
high 8.8

CVE-2024-45386 json

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 PC…

published 2025-02-11 20 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-4986

cvss
8.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 46%
public exploits
0
none known

Summary

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.

Patch / fix

  • Siemens SIMATIC PCS neo V4.1 V4.1 Update 2
  • Siemens SIMATIC PCS neo V5.0 V5.0 Update 1
  • Siemens SIMOCODE ES V19 V19 Update 1
  • Siemens SIRIUS Safety ES V19 (TIA Portal) V19 Update 1
  • Siemens SIRIUS Soft Starter ES V19 (TIA Portal) V19 Update 1
  • Siemens TIA Administrator V3.0.4

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-25-044-13 updated cvss 8.8

Siemens SIMATIC PCS neo, TIA Administrator, and TIA Portal

  • Siemens SIMATIC PCS neo V4.0
    affected: mitigation, no fix planned
  • Siemens SIMATIC PCS neo V4.1 <V4.1_Update_2
    affected: fixed in V4.1, mitigation
  • Siemens SIMATIC PCS neo V5.0 <V5.0_Update_1
    affected: fixed in V5.0, mitigation support.industry.siemens.com
  • Siemens SIMOCODE ES V19 <V19_Update_1 Siemens SIRIUS Safety ES V19 (TIA Portal) <V19_Update_1 Siemens SIRIUS Soft Starter ES V19 (TIA Portal) <V19_Update_1
    affected: fixed in V19, mitigation
  • Siemens TIA Administrator <V3.0.4
    affected: fixed in V3.0.4, mitigation

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
20 mo ago

Exploit prediction

0.56% chance of exploitation in the next 30 days, higher than 46% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CNA 4.0 8.7 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
CNA 4.0 8.7 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/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

Affected products

  • Siemens SIMATIC PCS neo V4.0
  • Siemens SIMATIC PCS neo V4.1
  • Siemens SIMATIC PCS neo V5.0
  • Siemens SIMOCODE ES V19
  • Siemens SIRIUS Safety ES V19 (TIA Portal)
  • Siemens SIRIUS Soft Starter ES V19 (TIA Portal)
  • Siemens TIA Administrator

Classification

Weakness
  • CWE-613 DEPRECATED: Insufficient Session Expiration

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.