CVE-2025-69674
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 CDATA FD614GS3-R850 V3.2.7_P161006 (Build.0333.250211) allows an attacker to execute arbitrary code via the node_mac, node_opt, opt_param, and domainblk parameters of the mesh_node_config and domiainblk_config modules
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 CDATA FD614GS3-R850 router firmware (v3.2.7_P161006) in the mesh_node_config and domainblk_config modules. The node_mac, node_opt, opt_param, and domainblk parameters fail to properly validate input length, allowing an attacker to overflow buffers and achieve arbitrary code 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
- Adjacent
- Complexity
- High
- Privileges
- High
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:A/AC:H/PR:H/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 firmware versionAccess the router administration interface or check system information page to determine the installed firmware version. This is typically found under System, Status, or About sections of the web UI, or via CLI command 'show version' or 'cat /proc/version' if SSH/telnet access is available.Affected if The installed firmware version is v3.2.7_P161006 (exact match) or falls within the affected version range around this release.
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Confirm mesh networking feature is enabledLocate the mesh networking configuration settings in the router web interface or configuration files. Look for mesh_node_config module settings, typically under Wireless, Mesh, or Network settings.Affected if Mesh networking feature is enabled and mesh_node_config module is active on the device.
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Identify access to domainblk_config moduleCheck the router configuration for domain blocking (domainblk) settings. This may appear under Firewall, Access Control, Blocking, or Security configuration sections in the web UI or config files.Affected if Domain blocking (domainblk_config) module is accessible or enabled in the router configuration.
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Inspect vulnerable parametersExamine the configuration values for node_mac, node_opt, opt_param, and domainblk parameters if present. These are passed to the mesh_node_config and domainblk_config modules. Check if long or malformed input strings can be supplied to these parameters.Affected if The router allows user-controllable input to these parameters without length validation, or if you can observe that input length is not checked before buffer operations.
The device is affected if it is running firmware version v3.2.7_P161006 (or a version in that release lineage) AND has either the mesh networking feature or domain blocking configuration module accessible/enabled.
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 patch when available; if no patch exists, restrict network access to the device and disable untrusted network-facing services to reduce attack surface.
- Consultation3.0 h
- Implementation6.0 h
- Testing3.0 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 $3,984.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-69674 — 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-2025-69674 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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