CVE-2018-4094
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 was discovered in certain Apple products. iOS before 11.2.5 is affected. macOS before 10.13.3 is affected. tvOS before 11.2.5 is affected. watchOS before 4.2.2 is affected. The issue involves the "Audio" component. It allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted audio file.
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 memory corruption vulnerability in Apple's Audio component allows remote attackers to execute arbitrary code or cause denial of service via a specially crafted audio file. The flaw affects parsing of audio files in iOS, macOS, tvOS, and watchOS before their respective patched versions.
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< 11.2.5< 11.2.5< 10.13.3< 4.2.2CVSS 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
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/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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Identify the Apple platformDetermine whether the system runs iOS (iPhone/iPad), macOS, tvOS, or watchOS. On iOS, go to Settings > General > About. On macOS, click Apple menu > About This Mac. On tvOS, go to Settings > General > About. On watchOS, open the Watch app on paired iPhone > General > About.Affected if The device runs any of the affected platforms: iOS, macOS, tvOS, or watchOS.
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Check iOS versionOn iOS device, go to Settings > General > About and note the Version number. Compare the version to 11.2.5.Affected if iOS version is lower than 11.2.5.
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Check macOS versionOn macOS, click Apple menu > About This Mac and note the version number. Compare to 10.13.3.Affected if macOS version is lower than 10.13.3.
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Check tvOS versionOn Apple TV, go to Settings > General > About and note the version number. Compare to 11.2.5.Affected if tvOS version is lower than 11.2.5.
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Check watchOS versionOn Apple Watch, open the Watch app on paired iPhone, go to General > About and note the watchOS version. Compare to 4.2.2.Affected if watchOS version is lower than 4.2.2.
The system is affected if it runs any unpatched Apple OS version below 11.2.5 for iOS/tvOS, below 10.13.3 for macOS, or below 4.2.2 for watchOS.
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 data4.2.210.13.311.2.5
Apply vendor-supplied patches: update iOS to 11.2.5 or later, macOS to 10.13.3 or later, tvOS to 11.2.5 or later, and watchOS to 4.2.2 or later. Alternatively, disable or restrict audio file handling from untrusted sources.
- Consultation3.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2018-4094 — 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-2018-4094 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