CVE-2025-31350
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 · uneditedA 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 'UpdateBufferingSettings' 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. (ZDI-CAN-25918)
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 confidenceTeleControl Server Basic contains a SQL injection vulnerability in the internal 'UpdateBufferingSettings' method. An authenticated attacker with network access to port 8000 can exploit this to bypass authorization, read/write to the database, and execute code with NT AUTHORITY\NetworkService privileges.
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< 3.1.2.2CVSS 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 checksWork through these to decide whether this CVE applies to you.
-
Identify TeleControl Server Basic versionOpen Windows Programs and Features (appwiz.cpl) or check the installation directory for version information. Look for 'TeleControl Server Basic' entry and note the installed version number.Affected if Installed version is lower than 3.1.2.2 (e.g., 3.1.0, 3.0.x, etc.)
-
Verify port 8000 is exposedRun 'netstat -an | findstr :8000' or use a network scanner to check if port 8000 is listening on external interfaces. Check firewall rules with 'netsh advfirewall firewall show rule name=all' for TeleControl Server port 8000 rules.Affected if Port 8000 is listening and accessible from untrusted networks (not localhost or internal VLAN only)
-
Confirm application authentication statusReview TeleControl Server Basic configuration files (typically in the installation folder under Config or Settings) for authentication settings related to the UpdateBufferingSettings method or API endpoints.Affected if Authentication is disabled, weak, or misconfigured for the UpdateBufferingSettings endpoint
-
Check for suspicious SQL activityReview database logs or application logs for unusual SQL queries, especially those containing multiple statements, UNION SELECT, or unexpected parameter values in UpdateBufferingSettings calls.Affected if SQL injection patterns found in logs, or unauthorized database modifications detected
User is affected if TeleControl Server Basic version is below 3.1.2.2 AND port 8000 is accessible from a network location where untrusted users can authenticate.
Generated from the published advisory. Verify against your own configuration.
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 · scoped3.1.2.2
Upgrade TeleControl Server Basic to version V3.1.2.2 or later to remediate this vulnerability. Restrict network access to port 8000 as an interim compensating control.
3.1.2.2
- Obtain TeleControl Server Basic version 3.1.2.2 or later from the official Siemens download portal (siemens.com) or your Siemens representative
- Ensure you have a complete backup of the current system including database and configuration files
- Schedule a maintenance window since the update may require service interruption
- Stop the TeleControl Server Basic service before applying the update
- Apply the update following Siemens installation documentation for your specific deployment
- Verify the UpdateBufferingSettings method is no longer vulnerable by reviewing release notes or patch documentation
- Restart the TeleControl Server Basic service
- Confirm the application functions normally and database operations work as expected
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation4.0 h
- Implementation2.0 h
- Testing4.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,392.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-31350 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2025-31350 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
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.
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.
- 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