CVE-2025-66608
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 found in FAST/TOOLS provided by Yokogawa Electric Corporation. This product does not properly validate URLs. An attacker could send specially crafted requests to steal files from the web server. The affected products and versions are as follows: FAST/TOOLS (Packages: RVSVRN, UNSVRN, HMIWEB, FTEES, HMIMOB) R9.01 to R10.04
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 confidenceFAST/TOOLS web server fails to properly validate URLs, allowing path traversal attacks where specially crafted requests can access arbitrary files on the server file system. This is a Local File Inclusion (LFI) vulnerability exploitable over the network.
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>= r9.01, <= r10.04CVSS 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
- None
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
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 FAST/TOOLS installationLocate Yokogawa FAST/TOOLS software on the system. Check for installation directories or consult system inventory. The web server component is typically accessed via HTTP/HTTPS on configured ports.Affected if FAST/TOOLS software is present on the system
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Determine installed versionUse system inventory tools, check installed software packages, or query the FAST/TOOLS version information through its administration interface or configuration files. Compare against the affected range.Affected if Installed version falls within r9.01 to r10.04 inclusive
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Verify web server component statusCheck if the FAST/TOOLS web server service is running and enabled. This can be done by querying running services, checking process lists, or reviewing the web server configuration.Affected if Web server component is running and accessible over the network
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Assess network exposureDetermine if the FAST/TOOLS web interface is accessible from network positions. Check firewall rules, listening ports, and network ACLs to identify if the web service is exposed beyond trusted network segments.Affected if Web server is accessible from untrusted network segments
A system is affected if it runs FAST/TOOLS version r9.01 through r10.04 with the web server component enabled and 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.
From vendor dataApply vendor patches for FAST/TOOLS R9.01-R10.04. Until patch is available, restrict network access to web services and implement web application firewall rules to block traversal sequences (../) in URL parameters.
- Consultation6.0 h
- Implementation12.0 h
- Testing8.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $8,448.
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Free · runs locallyCheck whether your project pulls in CVE-2025-66608 — 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-2025-66608 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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