SafariWeb browser · Apple
CVE-2019-8683
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 · uneditedMultiple memory corruption issues were addressed with improved memory handling. This issue is fixed in iOS 12.4, macOS Mojave 10.14.6, tvOS 12.4, watchOS 5.3, Safari 12.1.2, iTunes for Windows 12.9.6, iCloud for Windows 7.13, iCloud for Windows 10.6. Processing maliciously crafted web content may lead to arbitrary code execution.
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 confidenceMemory corruption vulnerability in WebKit affecting multiple Apple products (iOS, macOS, tvOS, watchOS, Safari, iTunes, iCloud for Windows). Processing maliciously crafted web content allows arbitrary code execution due to improper memory handling.
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
SafariWeb browser
< 12.1.2< 7.13>= 10.0, < 10.6< 12.9.6< 12.4< 10.14.6< 12.4< 5.3CVSS 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
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/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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Check Safari version on macOS or WindowsOpen Safari > About Safari (or Safari > About Safari on macOS, Help > About Safari on Windows). Compare the version number to the affected range (less than 12.1.2).Affected if Safari version is below 12.1.2 and the browser processes untrusted web content.
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Check iTunes version on WindowsOpen iTunes > Help > About iTunes. Compare the version number to the affected range (less than 12.9.6).Affected if iTunes version is below 12.9.6 and the iTunes Store or web content is accessed.
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Check iCloud for Windows versionOpen iCloud > click the gear icon > About iCloud. Compare the version number to the affected ranges (< 7.13 or >= 10.0, < 10.6).Affected if iCloud for Windows version falls outside the fixed ranges and web content is processed through iCloud services.
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Check macOS versionClick Apple menu > About This Mac. Compare the macOS version to 10.14.6 (the fix for macOS Mojave).Affected if macOS version is below 10.14.6 and WebKit-based applications process untrusted content.
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Check iOS device versionOn iPhone or iPad, go to Settings > General > About > Version. Compare to 12.4.Affected if iOS version is below 12.4 and the device browses untrusted web content via Safari or other WebKit-based apps.
If any checked product version falls below its fixed version and that product processes web content, the environment is vulnerable to CVE-2019-8683.
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 data5.37.1310.6
Apply the vendor patches: update iOS to 12.4+, macOS Mojave to 10.14.6+, tvOS to 12.4+, watchOS to 5.3+, Safari to 12.1.2+, and relevant Windows products to the specified versions. Deploy via enterprise patch management.
Fix this in Safari
Scoped from the published advisory
- Consultation4.0 h
- Implementation12.0 h
- Testing6.0 h
- Review / QA3.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $7,040.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2019-8683 — 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-2019-8683 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