CVE-2024-23440
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. The 0x22200B IOCTL code of the Vba32m64.sys driver allows to read up to 0x802 of memory from ar arbitrary user-supplied pointer.
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 confidenceVba32 Antivirus v3.36.0 kernel driver (Vba32m64.sys) contains an arbitrary memory read vulnerability via IOCTL code 0x22200B, allowing unprivileged users to read up to 0x802 bytes from any user-supplied memory address. This kernel-mode information disclosure could enable privilege escalation, credential theft, or bypassing 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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Confirm Vba32 Antivirus installationCheck for Vba32 Antivirus installation via program files directory, installed programs list, or running processes. Look for process named 'Vba32' or 'Vba32m64' in Task Manager or via command: tasklist /FI "IMAGENAME eq Vba32*"Affected if Vba32 Antivirus is installed and running on the system
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Identify Vba32 Antivirus versionOpen Windows Settings > Apps > Installed apps, or use command: wmic product get name,version, or check Add/Remove Programs. Look for 'Anti Virus Vba32' and verify the version number is exactly 3.36.0Affected if The installed version is exactly 3.36.0 (only this specific version is affected)
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Locate vulnerable driver fileSearch for file Vba32m64.sys in typical driver locations such as C:\Windows\System32\drivers\ or C:\Program Files\Vba32\. Use command: dir /s C:\Vba32m64.sys or Get-ChildItem -Path C:\ -Filter Vba32m64.sys -Recurse -ErrorAction SilentlyContinueAffected if File Vba32m64.sys exists on the system, indicating the vulnerable driver is present
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Check if driver is loadedCheck if the driver is active by running: sc query Vba32m64 or ls C:\Windows\System32\drivers\Vba32m64.sys, or check DriverView utility for loaded driversAffected if The Vba32m64.sys driver is loaded or running in kernel mode, enabling the vulnerable IOCTL interface
System is affected if Vba32 Antivirus version 3.36.0 is installed and the Vba32m64.sys driver is present and loaded, as the arbitrary memory read vulnerability via IOCTL 0x22200B can be exploited by any local user.
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 dataContact Vba32 vendor for available patches; if unavailable, disable or remove Vba32 Antivirus until a fix is released, as the vulnerable driver can be exploited by any local user.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,120.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2024-23440 — 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-2024-23440 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