CVE-2025-25530
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 · uneditedBuffer overflow vulnerability in Digital China DCBI-Netlog-LAB Gateway 1.0 due to the lack of length verification, which is related to saving parental control configuration information. Attackers who successfully exploit this vulnerability can cause the remote target device to crash or execute arbitrary commands.
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 · moderate confidenceBuffer overflow vulnerability in Digital China DCBI-Netlog-LAB Gateway 1.0's parental control configuration saving function due to missing input length validation. This allows remote unauthenticated attackers to cause device crashes or achieve arbitrary command execution.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
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
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/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 the gateway product and firmware versionAccess the device admin interface or check system information page to confirm the exact model is Digital China DCBI-Netlog-LAB Gateway and note the firmware version. Compare your version to 1.0.Affected if The device is Digital China DCBI-Netlog-LAB Gateway running firmware version 1.0
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Determine if parental control feature is enabledNavigate to the parental control configuration section in the device admin panel. Check whether any parental control profiles, rules, or time restrictions are currently active or configured.Affected if Parental control feature is enabled or has any configuration saved on the device
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Verify network exposure of the management interfaceCheck if the device administrative interface is directly accessible from untrusted networks or the internet. Review firewall rules and port forwarding configurations that expose the gateway.Affected if The device management interface is accessible from untrusted/external networks without proper access controls
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Inspect device logs for crashes or anomaliesReview system logs, kernel logs, or crash dumps on the device for evidence of unexpected restarts, buffer overflow errors, or suspicious command activity related to the parental control module.Affected if Logs show unexplained crashes, memory corruption errors, or unauthorized command execution attempts targeting the parental control function
You are affected if you are running Digital China DCBI-Netlog-LAB Gateway firmware version 1.0 with the parental control feature enabled and the device is accessible to unauthenticated network attackers.
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.
From vendor dataApply vendor firmware update containing proper input length validation for parental control configuration; if unavailable, isolate affected devices behind additional network segmentation and monitor for exploitation attempts.
- Consultation4.0 h
- Implementation3.0 h
- Testing4.0 h
- Review / QA2.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2025-25530 — 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-2025-25530 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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- 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
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