CVE-2025-30033

Code execution via installer DLL search path

Published Aug 12, 2025 · Updated Sep 8, 2026

DLL hijacking in Siemens Web Installer Application allows local users to execute code when a legitimate user installs an affected product. The setup component searches its working directory for DLLs without restricting loads to trusted paths, so it loads an attacker-planted library. An attacker must place a malicious DLL in the setup directory and wait for installer execution; exposure exists only during setup.

CVSS severity7.8
High
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

DLL hijacking in Siemens Web Installer Application allows local users to execute code when a legitimate user installs an affected product. The setup component searches its working directory for DLLs without restricting loads to trusted paths, so it loads an attacker-planted library. An attacker must place a malicious DLL in the setup directory and wait for installer execution; exposure exists only during setup.

The record

CVE
CVE-2025-30033
Published
Aug 12, 2025
Updated
Sep 8, 2026
Vendor
Siemens
Product
SIMATIC Process Function Library
Classifications
CWE-427, T1574.001
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 12, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 8, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <*

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Siemens · SIMATIC Process Function Libraryversion=0 <*
Siemens · Standard PID CTRL Toolversion=0 <*
Siemens · SIMATIC WinCC TeleControlversion=0 <*
Siemens · CEMATversion=0 <*
Siemens · SINEC NMSversion=0 <V4.0
Siemens · TIA Portal Cloud Connectorversion=0 <V2.3
Siemens · SIMATIC WinCC Unified Sequenceversion=0 <V20
Siemens · SIMATIC PCS 7 Standard Chemical Libraryversion=0 <*
Siemens · Modular PID CTRL Toolversion=0 <*
Siemens · SIMATIC WinCC Runtime Advancedversion=0 <V17 Update 9
Siemens · SIMATIC eaSie Core Packageversion=0 <*
Siemens · SIMATIC ProSaveversion=0 <*; version=0 <V17 Update 9; version=0 <V19 Update 4
Siemens · SIMATIC PCS 7 Advanced Process Faceplatesversion=0 <V9.1 SP2 Upd4
Siemens · SIMATIC WinCC Unified PC Runtimeversion=0 <*
Siemens · TIA Portalversion=0 <V17 Update 9; version=0 <V18 Update 6; version=0 <V19 Update 4; version=0 <V20 Update 4
Siemens · SIMATIC eaSie Workflow Skillsversion=0 <*
Siemens · SIMATIC STEP 7version=0 <*
Siemens · SIMATIC PCS 7 Advanced Process Graphicsversion=0 <*
Siemens · SIMATIC Route Controlversion=0 <*
Siemens · SIMATIC WinCCversion=0 <V7.5 SP2 Update 20; version=0 <V8.0 Update 8; version=0 <V8.1 Update 3
Siemens · SIMATIC Logonversion=0 <*; version=0 <V2.0 Upd3
Siemens · SIMATIC eaSie PCS 7 Skill Packageversion=0 <*
Siemens · SIMATIC MTP Creatorversion=0 <*; version=0 <V2.1; version=0 <V4.1.0.1; version=0 <V5.0.0.1
Siemens · SIMATIC Automation Tool SDK Windowsversion=0 <V5.0 SP4
Siemens · SIMATIC S7-PCTversion=0 <V3.5 SP4 Update 1
Siemens · SIMATIC WinCC Visualization Architect (SiVArc)version=0 <*; version=0 <V17 Update 9; version=0 <V19 Update 4; version=0 <V20 Update 3
Siemens · Automation License Managerversion=0 <*; version=0 <V6.2 Upd3
Siemens · SIMATIC Safety Matrixversion=0 <*
Siemens · SIMATIC S7 F Systemsversion=0 <*
Siemens · SIMATIC PDMversion=0 <*; version=0 <V9.3 SP1 Upd2
Siemens · SIMATIC PCS 7 Logic Matrixversion=0 <*; version=0 <V9.1 Upd8
Siemens · SIMATIC Management Consoleversion=0 <V9.1 SP1 Upd8
Siemens · SIMIT Rapid Testerversion=0 <*
Siemens · SIMATIC eaSie Document Skillsversion=0 <*
Siemens · OpenPCS 7version=0 <*
Siemens · SIMATIC S7-PLCSIM Advancedversion=0 <V7.0 Update 1
Siemens · SIMATIC S7-1500 Software Controllerversion=0 <*; version=0 <V31.1.5
Siemens · TIA Portal Test Suiteversion=0 <*; version=0 <V19 Update 4; version=0 <V20 Update 3
Siemens · SIMATIC BATCHversion=0 <*
Siemens · SIMATIC ODK 1500Sversion=0 <*
Siemens · Siemens Network Plannerversion=0 <V2.0 SP2
Siemens · SIMATIC PDM Maintenance Stationversion=0 <*
Siemens · SIMATIC Management Agentversion=0 <V9.1 SP1 Upd8
Siemens · SIMATIC Control Function Libraryversion=0 <*; version=0 <V3.1.0.2; version=0 <V4.1
Siemens · MultiFieldbus Configuration Toolversion=0 <V1.5.5.0
Siemens · SIMATIC MTP Integratorversion=0 <*
Siemens · SIMATIC WinCC flexible ESversion=0 <*
Siemens · SIMATIC PCS 7 PowerControlversion=0 <*
Siemens · SIMATIC PCS 7/OPEN OSversion=0 <*
Siemens · SINEMA Remote Connect Clientversion=0 <*
Siemens · CP PtP Param configuring interfaceversion=0 <*
Siemens · SIMATIC PCS 7version=0 <V10.0 SP1 UC01; version=0 <V9.1 SP1 UC08
Siemens · SIMATIC PCS 7 Industry Libraryversion=0 <*
Siemens · SIMATIC Automation Toolversion=0 <V5.0 SP4
Siemens · WinCC Panel Image Setupversion=0 <V17 Update 9
Siemens · SIMATIC WinCC Runtime Professionalversion=0 <*; version=0 <V21
Siemens · SIMATIC PCS 7 TeleControlversion=0 <*
Siemens · FM Configuration Packageversion=0 <*
Siemens · TIA Project-Serverversion=0 <*; version=0 <V2.2
Siemens · SIMATIC Energy Suiteversion=0 <*; version=0 <V19 Update 4
Siemens · SIMATIC PCS 7 Basis Faceplatesversion=0 <V9.1 SP2 Upd2
Siemens · SIMATIC PCS 7 MPC Configuratorversion=0 <*
Siemens · SIMATIC STEP 7 CFCversion=0 <*
Siemens · SIMATIC D7-SYSversion=0 <V10.0 SP1
Siemens · SIMATIC PCS 7 Advanced Process Functionsversion=0 <*
Siemens · SIMATIC Targetversion=0 <V6.0 SP3
Siemens · SIMATIC S7-PLCSIMversion=0 <*; version=0 <V20 Update 1
Siemens · SIMATIC S7-Fail-safe Configuration Tool (S7-FCT)version=0 <V4.0.1
Siemens · SIMATIC WinCC Unified Line Coordinationversion=0 <V20
Siemens · SIMATIC PCS 7 Basis Libraryversion=0 <V10.0 SP1 Upd2; version=0 <V9.1 SP2 Upd8
Siemens · SIMATIC PCS 7 Advanced Process Libraryversion=0 <*; version=0 <V9.1 SP2 Upd6
Siemens · Energy Support Libraryversion=0 <*
Siemens · SINAMICS Startdriveversion=0 <*
Siemens · SIMATIC Process Historianversion=0 <*; version=0 <V2024 SP1 Upd2
Siemens · SIMATIC PCS neoversion=0 <*; version=0 <V6.0 SP1
Siemens · SIMIT Simulation Platformversion=0 <*
Siemens · SIMATIC NET PC Softwareversion=0 <*; version=0 <V20.0 Update 1
Siemens · Create MyConfigversion=0 <V6.9
Siemens · TeleControl Server Basicversion=0 <V3.1.2.2
Siemens · TIA Administratorversion=0 <V3.0.6

Published CVSS scores

8.5Siemens ProductCERTCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
7.8Siemens ProductCERTCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-427Uncontrolled Search Path Element
T1574.001Hijack Execution Flow: DLL

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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