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Telecontrol Server BasicApplication · Siemens

CVE-2025-32833

HIGH · 8.8 CVSS v3.1 Published 2025-04-16
Fix available
A fix is available. Upgrade to 3.1.2.2 or later.
See remediation →
94/100
Remediation priority · Urgent
Remotely reachable 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 TeleControl Server Basic (All versions < V3.1.2.2). The affected application is vulnerable to SQL injection through the internally used 'UnlockProjectUserRights' method. This could allow an authenticated remote attacker to bypass authorization controls, to read from and write to the application's database and execute code with "NT AUTHORITY\NetworkService" permissions. A successful attack requires the attacker to be able to access port 8000 on a system where a vulnerable version of the affected application is executed on.

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

SQL injection vulnerability in TeleControl Server Basic (all versions < V3.1.2.2) in the 'UnlockProjectUserRights' method allows authenticated remote attackers to bypass authorization, read/write to the database, and execute code with NT AUTHORITY\NetworkService privileges via port 8000.

MitigationUpgrade to V3.1.2.2 or later to patch the vulnerability. If immediate patching is not feasible, restrict network access to port 8000 to limit attack surface.

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
Telecontrol Server BasicApplication
Affected:< 3.1.2.2

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
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/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. Identify TeleControl Server Basic installation
    Check for TeleControl Server Basic in Windows installed programs (Control Panel > Programs and Features) or look for the installation directory (commonly in C:\Program Files\Siemens\ or C:\Program Files (x86)\Siemens\). Check running services named 'TeleControl Server' or similar.
    Affected if The software is installed and no version is shown or version is below 3.1.2.2
  2. Determine installed version
    Locate the main executable (often TCServer.exe, TeleControlServer.exe, or similar in the installation bin folder) and right-click > Properties > Details to view the File Version, or check the About/Version information in the application itself if accessible.
    Affected if File version is displayed but is lower than 3.1.2.2 or the version cannot be determined (older installations may not display version info)
  3. Verify if port 8000 is listening
    Open Command Prompt and run 'netstat -an | findstr :8000' or use PowerShell 'Test-NetConnection -ComputerName localhost -Port 8000' to check if the service is listening on the default port.
    Affected if Port 8000 shows as LISTENING or ESTABLISHED, indicating the server is active and exposed on the network
  4. Confirm UnlockProjectUserRights method accessibility
    Review the TeleControl Server configuration files (often XML or config files in the installation directory) for web service or API endpoint settings. The method is exposed via the server's web/API interface on port 8000.
    Affected if The server API/web interface is accessible on port 8000 and the UnlockProjectUserRights endpoint is enabled (default configuration)

A user is affected if TeleControl Server Basic is installed with a version lower than 3.1.2.2 and the service is running and accessible on port 8000.

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.

dbcve · scoped
Upgrade available Upgrade to 3.1.2.2 or later
Fixed in 3.1.2.2
Interim mitigation

Upgrade to V3.1.2.2 or later to patch the vulnerability. If immediate patching is not feasible, restrict network access to port 8000 to limit attack surface.

Recommended fix High confidence

TeleControl Server Basic V3.1.2.2

  1. 1. Identify the current version of TeleControl Server Basic installed on the system
  2. 2. Obtain TeleControl Server Basic version 3.1.2.2 from the official Siemens download portal or through your Siemens support channel
  3. 3. Create a complete backup of the current TeleControl Server Basic configuration and database
  4. 4. Stop the TeleControl Server Basic service to ensure a clean upgrade process
  5. 5. Install version 3.1.2.2 of TeleControl Server Basic following Siemens installation documentation
  6. 6. Restore the backed-up configuration after installation
  7. 7. Restart the TeleControl Server Basic service
  8. 8. Verify the application is running correctly and test that the UnlockProjectUserRights method functions properly

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Telecontrol Server Basic Scoped from the published advisory
  • Consultation4.0 h
  • Implementation4.0 h
  • Testing6.0 h
  • Review / QA2.0 h
16.0 hours of engineering $2,780
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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-2025-32833 in production — separate from our analysis above.

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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