CVE-2024-23439
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 · uneditedVba32 Antivirus v3.36.0 is vulnerable to an Arbitrary Memory Read vulnerability by triggering the 0x22201B, 0x22201F, 0x222023, 0x222027 ,0x22202B, 0x22202F, 0x22203F, 0x222057 and 0x22205B IOCTL codes of the Vba32m64.sys driver.
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 confidenceVba32 Antivirus version 3.36.0 contains a kernel-mode driver (Vba32m64.sys) that exposes multiple IOCTL codes (0x22201B through 0x22205B) which allow an attacker to read arbitrary kernel memory locations. This could enable privilege escalation, sensitive information disclosure, or bypass security controls.
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= 3.36.0CVSS 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
- None
- Availability
- High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/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 Vba32 Antivirus is installedCheck for Vba32 Antivirus installation by looking in Add/Remove Programs (Windows), or search for Vba32-related files in Program Files directories, or check for the presence of Vba32m64.sys driver fileAffected if Vba32 Antivirus is present on the system
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Determine the installed version of Vba32 AntivirusLocate the main Vba32 executable or DLL (typically in the Vba32 installation directory) and check its version property, or use 'wmic product get name,version' if available, or check registry keys under HKLM\Software\Vba32 or HKLM\Software\Wow6432Node\Vba32Affected if Installed version is exactly 3.36.0
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Verify presence of the vulnerable driver Vba32m64.sysSearch for the file Vba32m64.sys in the Vba32 installation directory or Windows System32/drivers directory. On 64-bit systems, also check SysWOW64/drivers directory.Affected if The driver file Vba32m64.sys exists on the system
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Check if Vba32m64.sys driver is loadedOpen an elevated command prompt and run 'sc query Vba32m64' or 'driverquery /v | findstr Vba32' to check driver status, or use Autoruns or similar tool to check for the driverAffected if The Vba32m64.sys driver is currently loaded or running
A system is affected if Vba32 Antivirus version 3.36.0 is installed AND the Vba32m64.sys driver is present and loaded, exposing the vulnerable IOCTL interface (0x22201B-0x22205B) for arbitrary kernel memory reads.
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-supplied patches or update to a patched version of Vba32 Antivirus that addresses the insecure IOCTL handling in the Vba32m64.sys driver. Consider restricting access to the driver via application whiteloring until patched.
- Consultation2.0 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-2024-23439 — 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-2024-23439 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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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- 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
- No spam, self-promotion, credentials, or personal data