CVE-2026-30769
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 TVicPort64.sys component of EnTech Taiwan TVicPort Product v4.0, File v5.2.1.0 allows attackers to escalate privileges via sending crafted IOCTL 0x80002008 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 confidenceTVicPort64.sys kernel driver in EnTech Taiwan TVicPort v4.0 (file v5.2.1.0) contains a privilege escalation vulnerability exploitable via crafted IOCTL requests with code 0x80002008. The driver provides direct hardware port I/O access, and improper validation of IOCTL input allows local attackers to elevate privileges to SYSTEM level.
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= 5.2.1.0CVSS 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
- Local
- Complexity
- Low
- Privileges
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:L/AC:L/PR:L/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 TVicPort64.sys driver fileSearch for TVicPort64.sys on the system using File Explorer or command: dir /s C:\TVicPort64.sys (adjust drive letter as needed). Typical locations include C:\Windows\System32\drivers\ or C:\Program Files\EnTech Taiwan\TVicPort\Affected if The driver file TVicPort64.sys exists on the system
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Verify driver file versionRight-click the TVicPort64.sys file, select Properties, then go to the Details tab to check the File Version field. Alternatively, use PowerShell: (Get-Item 'C:\Windows\System32\drivers\TVicPort64.sys').VersionInfo.FileVersionAffected if File version equals 5.2.1.0 exactly
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Confirm driver is loadedOpen Command Prompt as Administrator and run: sc query TVicPort64 or check Device Manager for the driver under Non-Plug and Play Drivers. In PowerShell, run: Get-Process -Module TVicPort64.sys (if driver is loaded into a process) or check driver signature statusAffected if Driver is installed and loaded/active in the system
System is affected if TVicPort64.sys with file version 5.2.1.0 is present AND the driver is installed and active on the system.
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 dataIf an updated version of TVicPort is available from the vendor, apply the patch. Otherwise, assess whether the driver is required for operations; if not, disable or remove the TVicPort64.sys driver to eliminate the attack surface.
- Consultation8.0 h
- Implementation4.0 h
- Testing12.0 h
- Review / QA6.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-30769 — 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-2026-30769 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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