CVE-2024-33228
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 · uneditedAn issue in the component segwindrvx64.sys of Insyde Software Corp SEG Windows Driver v100.00.07.02 allows attackers to escalate privileges and execute arbitrary code via sending crafted IOCTL requests.
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 confidenceThis is a local privilege escalation vulnerability in the Insyde SEG Windows kernel-mode driver (segwindrvx64.sys). The flaw exists in the driver's IOCTL (Input/Output Control) request handler, which fails to properly validate or sanitize input from unprivileged users. By sending specially crafted IOCTL requests, an attacker can trigger the vulnerability to elevate their privileges from a standard user to SYSTEM-level and execute arbitrary code in kernel context.
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
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:L/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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Locate the segwindrvx64.sys driver fileSearch for the driver file on the system using: Get-ChildItem -Path C:\Windows\System32\drivers -Filter segwindrvx64.sys -Recurse -ErrorAction SilentlyContinueAffected if The driver file exists on the system in the drivers directory
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Retrieve driver version informationRight-click the driver file, select Properties, then go to the Details tab to view the File Version, or use: (Get-Item 'C:\Windows\System32\drivers\segwindrvx64.sys').VersionInfo | Select-Object FileVersion,ProductVersionAffected if The driver version matches any known vulnerable versions (if known) or cannot be determined to be patched
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Check if the driver is currently loadedRun: Get-Process -ModuleName segwindrvx64.sys -ErrorAction SilentlyContinue or check driver loaded status via: driverquery /v | findstr segwindrvAffected if The driver is loaded and running in kernel mode
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Verify access permissions on the driver device objectUse Sysinternals AccessChk or check the device\\SEG object permissions: winobj (from Sysinternals) to view \\Device\\SEG access rights for unprivileged usersAffected if Unprivileged users or low-privileged groups have write or execute access to the driver device IOCTL interface
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Identify processes or services using the driverCheck for services using this driver: Get-WmiObject Win32_Service | Where-Object {$_.PathName -like '*segwindrv*'} or review Event Viewer for driver load eventsAffected if A service or process loads or depends on the vulnerable driver
If the segwindrvx64.sys driver is present, loaded, and accessible to unprivileged users without proper IOCTL input validation, the system is likely affected by this privilege escalation vulnerability.
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 the vendor-supplied patch from Insyde Software Corp that addresses the IOCTL handler vulnerability in segwindrvx64.sys. Until the patch is available, consider disabling or restricting access to the affected driver if possible.
- Consultation4.0 h
- Implementation16.0 h
- Testing8.0 h
- Review / QA4.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2024-33228 — 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-2024-33228 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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- Version or environment caveats, and links to real fixes
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