CVE-2025-31985
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 · uneditedHCL BigFix Service Management (SM) is affected by a security misconfiguration due to a missing or insecure “X-Content-Type-Options” header. This could allow browsers to perform MIME-type sniffing, potentially causing malicious content to be interpreted and executed incorrectly.
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 confidenceHCL BigFix Service Management lacks the X-Content-Type-Options security header or has it improperly configured. Without 'X-Content-Type-Options: nosniff', browsers may perform MIME-type sniffing and interpret content as a different type than declared, potentially allowing malicious scripts to execute via MIME confusion attacks.
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= 23.0CVSS 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
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/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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Verify HCL BigFix Service Management installationLocate the HCL BigFix Service Management web interface or confirm installation via system inventory or package manager. Check for processes named 'BigFix' or 'Service Management' running on the system.Affected if HCL BigFix Service Management is installed and accessible via HTTP/HTTPS.
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Confirm installed version is 23.0Access the product's about page, version info in the admin console, or check the software inventory/registry for the exact version number of HCL BigFix Service Management.Affected if The installed version is exactly 23.0.
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Capture HTTP response headers from the web applicationUse a browser's developer tools (Network tab), curl -I <URL>, or a tool like Burp Suite to capture the HTTP response headers when accessing the HCL BigFix Service Management login or main page.Affected if HTTP responses are received from the HCL BigFix Service Management web interface.
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Inspect for X-Content-Type-Options headerExamine the captured HTTP response headers and look for the 'X-Content-Type-Options' header field.Affected if The header is absent from all HTTP responses, meaning the vulnerability is present.
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Verify header value is 'nosniff'If the X-Content-Type-Options header exists, confirm its value is set to 'nosniff'. Check that it reads exactly 'X-Content-Type-Options: nosniff'.Affected if The header is present but set to any value other than 'nosniff', or is missing entirely.
The environment is affected if HCL BigFix Service Management version 23.0 is installed and the HTTP responses lack the 'X-Content-Type-Options: nosniff' header.
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 dataConfigure the web server or application behind HCL BigFix SM to include 'X-Content-Type-Options: nosniff' on all HTTP responses to prevent MIME-type sniffing.
- Consultation2.0 h
- Implementation2.0 h
- Testing1.0 h
- Review / QA1.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2025-31985 — 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-2025-31985 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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