SafariWeb browser · Apple
CVE-2019-8835
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 tvOS 13.3, iCloud for Windows 10.9, iOS 13.3 and iPadOS 13.3, Safari 13.0.4, iTunes 12.10.3 for Windows, iCloud for Windows 7.16. 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 · moderate confidenceMemory corruption vulnerability in WebKit (Apple's browser engine) that can be triggered by visiting maliciously crafted web content, potentially allowing arbitrary code execution on the affected device.
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
< 13.0.4
Enterprise Linux DesktopOperating system
= 7.0
Enterprise Linux ServerOperating system
= 7.0
Enterprise Linux WorkstationOperating system
= 7.0< 7.16>= 10.0, < 10.9< 12.10.3< 13.3< 13.3CVSS 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 macOSOpen Safari, click Safari menu > About Safari, or run 'safari_version' in TerminalAffected if Version is displayed as less than 13.0.4
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Check iOS version on iPhone/iPadGo to Settings > General > About on the iOS device, or connect to computer and check in Finder/iTunesAffected if iOS version is shown as less than 13.3
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Check iPadOS version on iPadGo to Settings > General > About on the iPadAffected if iPadOS version is shown as less than 13.3
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Check iTunes version on WindowsOpen iTunes, go to Help > About iTunes, or right-click iTunes.exe and view Properties > DetailsAffected if Version is less than 12.10.3
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Check iCloud for Windows versionOpen iCloud, go to Help > About iCloud, or view version in Windows Programs and FeaturesAffected if Version is less than 7.16, or version is 10.0 through 10.9 range
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Verify WebKit usage as browser engineCheck if any installed browser or application uses WebKit as its rendering engine (common in Safari, some third-party browsers, and WebView components)Affected if WebKit-based browser or component is present AND its associated product version is in the affected ranges above
The environment is affected if any Apple product listed (Safari, iOS, iPadOS, iTunes, iCloud for Windows) is installed with a version below the safe thresholds specified in the affected versions.
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 data7.1610.912.10.3
Apply vendor patches: update iOS/iPadOS to 13.3+, tvOS to 13.3+, Safari to 13.0.4+, and iCloud/iTunes for Windows to the specified versions (7.16/10.9 and 12.10.3 respectively).
Fix this in Safari
Scoped from the published advisory
- Consultation1.0 h
- Implementation2.0 h
- Testing1.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,424.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2019-8835 — 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-2019-8835 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