CVE-2019-8564
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 · uneditedA logic issue was addressed with improved validation. This issue is fixed in macOS Mojave 10.14.4, Security Update 2019-002 High Sierra, Security Update 2019-002 Sierra. An attacker in a privileged network position can modify driver state.
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 confidenceCVE-2019-8564 is a logic validation flaw in macOS drivers where an attacker with privileged network position (man-in-the-middle or similar network-level access) can modify driver state. The vulnerability stems from insufficient validation in driver interactions, allowing state manipulation without direct code execution privileges.
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< 10.14.4CVSS 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
- None
- Integrity
- High
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
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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Check installed macOS versionRun 'sw_vers -productVersion' in Terminal or click Apple menu > About This MacAffected if Version is 10.14.3 or earlier (less than 10.14.4)
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Verify system is unpatchedCheck the Security Update history in System Preferences > Security & Privacy > General for presence of 'Security Update 2019-002' or later updatesAffected if No security updates from 2019 or later are installed on versions below 10.14.4
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Assess network exposureDetermine if the system operates on networks where an untrusted party could intercept traffic (public WiFi, untrusted corporate networks, shared infrastructure)Affected if System frequently connects to networks where a privileged network position attacker could perform man-in-the-middle attacks
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Review driver activity logsInspect system logs for anomalous driver state changes: grep -i 'driver.*state' /var/log/system.log or use Console app to search driver-related messagesAffected if Unexpected driver state transitions or validation failures appear in logs without known cause
A system is affected if it runs macOS versions earlier than 10.14.4 and operates in an environment where a privileged network attacker could intercept traffic to manipulate driver state.
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 data10.14.4
Apply the appropriate macOS security update (Security Update 2019-002 for Sierra/High Sierra, or update to Mojave 10.14.4) to patched systems. In enterprise environments, restrict network access and monitor for anomalous driver state changes.
- 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-2019-8564 — 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-2019-8564 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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