dbcve.org
Simatic Pcs NeoApplication · Siemens

CVE-2025-30176

HIGH · 7.5 CVSS v3.1 Published 2025-05-13
Fix available
A fix is available. Upgrade to 2.15.1.1 / 4.0 or later.
See remediation →
84/100
Remediation priority · High
Remotely reachable No privileges Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
A vulnerability has been identified in SIMATIC PCS neo V4.1 (All versions), SIMATIC PCS neo V5.0 (All versions), SINEC NMS (All versions < V4.0), SINEMA Remote Connect (All versions), Totally Integrated Automation Portal (TIA Portal) V17 (All versions), Totally Integrated Automation Portal (TIA Portal) V18 (All versions), Totally Integrated Automation Portal (TIA Portal) V19 (All versions), Totally Integrated Automation Portal (TIA Portal) V20 (All versions), User Management Component (UMC) (All versions < V2.15.1.1). Affected products contain a out of bound read buffer overflow vulnerability in the integrated UMC component. This could allow an unauthenticated remote attacker to cause a denial of service condition.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · high confidence

An out-of-bounds read buffer overflow vulnerability exists in the User Management Component (UMC) integrated into multiple Siemens industrial automation products including SIMATIC PCS neo, SINEC NMS, SINEMA Remote Connect, and TIA Portal. This allows unauthenticated remote attackers to cause denial of service conditions.

MitigationUpdate UMC to version V2.15.1.1 or later and SINEC NMS to V4.0 or later; for other affected products (TIA Portal V17-V20, SIMATIC PCS neo, SINEMA Remote Connect), contact Siemens for available patches or security updates.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Simatic Pcs NeoApplication
Affected:= 4.1= 5.0
Sinec NmsApplication
Affected:< 4.0
Sinema Remote ConnectApplication
Affected:all versions
Totally Integrated Automation PortalApplication
Affected:= 17= 18= 19= 20
User Management ComponentApplication
Affected:< 2.15.1.1

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Check if UMC (User Management Component) is installed
    Look for UMC installation directories or check installed programs. Common paths: C:\Program Files\Siemens\UMC or /opt/siemens/umc. On Windows, check Add/Remove Programs for 'User Management Component' entry.
    Affected if UMC is installed and running
  2. Identify UMC version
    Check the version of the installed UMC. Typically found in: the application's 'About' dialog, version info in the executable (right-click Properties), or check the uninstall registry key on Windows (HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall).
    Affected if UMC version is less than 2.15.1.1
  3. Check SINEC NMS version if installed
    If SINEC NMS is installed, check its version through the SINEC NMS application or check installation directories for version information.
    Affected if SINEC NMS version is less than 4.0
  4. Check TIA Portal version if installed
    If TIA Portal is installed, open the TIA Portal and check Help > About Totally Integrated Automation, or check installation directories (typically C:\Program Files\Siemens\TIAPortal).
    Affected if TIA Portal version is 17, 18, 19, or 20
  5. Check SIMATIC PCS neo version if installed
    If SIMATIC PCS neo is installed, check through the application or installation directories for version information.
    Affected if SIMATIC PCS neo version is 4.1 or 5.0
  6. Check if UMC component is enabled
    Verify the User Management Component service is running or if the UMC web interface is accessible. Check Windows Services for 'User Management Component' or check if port 443/80 responses indicate UMC is active.
    Affected if UMC service is running or UMC web interface is accessible on the network

A system is affected if UMC version is below 2.15.1.1, or SINEC NMS is below V4.0, or TIA Portal is V17-V20, or SIMATIC PCS neo is V4.1 or V5.0, and the UMC component is installed and enabled.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

From vendor data
Upgrade available Upgrade to 2.15.1.1 / 4.0 or later
Fixed in 2.15.1.14.0
Interim mitigation

Update UMC to version V2.15.1.1 or later and SINEC NMS to V4.0 or later; for other affected products (TIA Portal V17-V20, SIMATIC PCS neo, SINEMA Remote Connect), contact Siemens for available patches or security updates.

Fix this in Simatic Pcs Neo Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing6.0 h
  • Review / QA4.0 h
22.0 hours of engineering $3,860
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $6,176.

Scan for this in your stack

Free · runs locally
dbcve dependency scanner

Check whether your project pulls in CVE-2025-30176 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.

Get it on GitHub Scan in the browser

References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2025-30176 in production — separate from our analysis above.

No notes yet

Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.

What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data