CVE-2025-40735
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 SINEC NMS (All versions < V4.0). The affected devices are vulnerable to SQL injection. This could allow an unauthenticated remote attacker to execute arbitrary SQL queries on the server database.
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 confidenceSINEC NMS versions prior to V4.0 contain an unauthenticated SQL injection vulnerability in their web interface or API endpoints. An attacker can craft malicious SQL statements within HTTP requests to bypass authentication and execute arbitrary queries against the backend database, potentially exfiltrating sensitive data, modifying records, or escalating 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< 4.0CVSS 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.
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Identify SINEC NMS installationLocate SINEC NMS installation directory or check system inventory for Siemens SINEC NMS software presenceAffected if SINEC NMS is installed on the system
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Check installed versionUse system inventory tools, software registry, or SINEC NMS about/version page to determine the exact version numberAffected if Installed version is prior to V4.0 (any version < 4.0)
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Verify web interface accessibilityDetermine if the SINEC NMS web interface or API endpoints are reachable over the network (typically ports 443, 8080, or configured management ports)Affected if Web interface or API is network-accessible from untrusted networks
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Confirm vulnerability applicabilityVerify that the web interface is enabled and operational - the SQL injection exists in the web interface and API authentication componentsAffected if Web interface is enabled and exposed
You are affected if SINEC NMS version is identified as any release prior to V4.0 and the management web interface is network-accessible.
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 · scoped4.0
Upgrade SINEC NMS to version V4.0 or later to obtain the patched software. If immediate upgrade is not feasible, restrict network access to the management interface using firewall rules or VPNs to limit exposure to untrusted networks.
SINEC NMS V4.0 or later
- Identify current SINEC NMS version by checking the product interface or system information
- Schedule a maintenance window for the upgrade process
- Create a complete backup of the current SINEC NMS configuration and database
- Upgrade SINEC NMS to version 4.0 or later (all versions prior to V4.0 are affected)
- Verify the upgrade completed successfully by checking the version in the product interface
- Confirm the application is functioning properly and all services are running
- Review system logs to ensure no errors occurred during or after the upgrade
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation4.0 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 $3,328.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-40735 — 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-2025-40735 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
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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