CVE-2024-9499
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 · uneditedDLL hijacking vulnerabilities, caused by an uncontrolled search path in the USBXpress Win 98SE Dev Kit installer can lead to privilege escalation and arbitrary code execution when running the impacted installer.
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 confidenceThe USBXpress Win 98SE Dev Kit installer suffers from DLL hijacking vulnerabilities due to an uncontrolled search path, allowing it to load malicious DLLs from attacker-controlled locations. Since installers typically run with elevated privileges, this enables privilege escalation to SYSTEM/Administrator and 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
- Local
- Complexity
- Low
- Privileges
- None
- User interaction
- Required
- Scope
- Changed
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/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 if USBXpress Win 98SE Dev Kit is presentSearch the system for files or directories related to USBXpress Win 98SE Dev Kit. Check common installation paths such as C:\Program Files\Silicon Labs\ or C:\Program Files (x86)\Silicon Labs\, and look for folders named USBXpress, USBXpress Dev Kit, or Win98SE Dev Kit. Also search for any installer executable (setup.exe, install.exe) with USBXpress in the filename.Affected if The USBXpress Win 98SE Dev Kit installer or its files are found on the system.
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Locate the installer executableSearch for installer executables named setup.exe, install.exe, or similar in USBXpress-related directories. Use commands like dir /s C:\*USBXpress* or search the filesystem for the installer file.Affected if The installer executable exists on the system.
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Check for insecure DLL loading locationsIdentify directories where the installer might be run from or where it might search for DLLs. This includes the installer directory itself, current working directory, system directories, and PATH directories. Document whether the installer directory or any DLL search path location is writable by non-privileged users.Affected if The installer directory or any directory in its DLL search path is writable by standard users, allowing an attacker to place a malicious DLL.
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Examine DLL search path vulnerabilityReview the installer behavior for uncontrolled search path usage. The vulnerability exists if the installer loads DLLs from the current directory or other insecure locations without validating the DLL path. Check if the installer lacks explicit DLL path specification.Affected if The installer uses an uncontrolled search path and loads DLLs from locations that could be controlled by an attacker.
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Assess execution contextDetermine if the installer has been or could be run from shared, network, or untrusted directories. Check for any documentation, scripts, or processes that invoke the USBXpress installer from non-system locations.Affected if The installer can be invoked from or has been run from directories accessible to untrusted users.
A system is affected if the USBXpress Win 98SE Dev Kit installer is present and can be run from or loads DLLs from directories writable by untrusted users, enabling DLL hijacking for privilege escalation.
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 dataAvoid using the legacy USBXpress Win 98SE Dev Kit; if required, run in an isolated environment with strict access controls. The vendor should remediate by implementing secure DLL loading (e.g., explicit paths, Safe DLL Search Mode, digital signing).
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2024-9499 — 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-2024-9499 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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