CVE-2015-8772
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 · uneditedMcPvDrv.sys 4.6.111.0 in McAfee File Lock 5.x in McAfee Total Protection allows local users to obtain sensitive information from kernel memory or cause a denial of service (system crash) via a large VERIFY_INFORMATION.Length value in an IOCTL_DISK_VERIFY ioctl call.
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 confidenceA kernel-mode driver (McPvDrv.sys) in McAfee File Lock 5.x fails to properly validate the VERIFY_INFORMATION.Length parameter in IOCTL_DISK_VERIFY ioctl calls, allowing local attackers to read sensitive kernel memory or crash the system.
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= 5.0CVSS 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
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- High
CVSS:3.0/AV:N/AC:L/PR:N/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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Locate the McPvDrv.sys driver fileSearch for McPvDrv.sys on the system using file search or command: dir /s C:\Windows\System32\drivers\McPvDrv.sys (adjust drive letter as needed)Affected if The file McPvDrv.sys exists on the system
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Verify McAfee File Lock versionCheck the installed version of McAfee File Lock through Windows Programs and Features, or inspect version info of the McPvDrv.sys file by right-clicking the driver file, selecting Properties, and viewing the Details tabAffected if The installed version is exactly 5.0
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Confirm the driver is loadedOpen Command Prompt as Administrator and run: sc query McPvDrv or check Device Manager for hidden devices under non-plug and play driversAffected if The driver service state shows as RUNNING or the driver is listed as an active non-plug and play driver
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Check for IOCTL_DISK_VERIFY handler exposureThis requires kernel debugging tools or memory analysis; as a simpler indicator, verify the driver date and version by running: driverquery /v | findstr McPvDrvAffected if The driver is present and loaded with an unpatched version string corresponding to the vulnerable release
The system is affected if McPvDrv.sys from McAfee File Lock version 5.0 is installed and the driver is loaded in memory.
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 patch for McAfee Total Protection when available, or disable the McAfee File Lock feature if the driver is not required for business operations.
- Consultation4.0 h
- Implementation2.0 h
- Testing3.0 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 $3,152.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2015-8772 — 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-2015-8772 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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