CVE-2019-8750
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 input validation. This issue is fixed in watchOS 6.1, iCloud for Windows 11.0. Multiple issues in libxslt.
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 libxslt library caused by insufficient input validation when processing XML/XSLT documents. This can lead to arbitrary code execution or denial of service. Fixed in watchOS 6.1 and iCloud for Windows 11.0.
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< 10.8< 6.1CVSS 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
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/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 if iCloud for Windows is installedOpen Windows Control Panel > Programs and Features, or check C:\Program Files\Apple Software Update\iCloud.exe exists, or search for 'iCloud' in the Start menuAffected if iCloud for Windows is installed and version is below 10.8
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Determine installed iCloud for Windows versionRight-click iCloud in the Start menu, select 'Open file location', right-click the iCloud executable, select Properties, and check the 'Details' tab for Product versionAffected if Version shown is less than 10.8 (for example, 10.7.x or earlier)
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Check Apple Watch paired with iPhoneOpen the Watch app on paired iPhone, go to General > About, or check the Apple Watch directly by opening Settings > General > About on the watchAffected if watchOS version displayed is below 6.1 (for example, 6.0.x or earlier)
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Verify libxslt usage in third-party applicationsIf using third-party software that processes XML/XSLT documents, check the application's 'About' or 'Help' dialog to identify the bundled libxslt version, or examine the application's installation folder for libxslt.dllAffected if Application bundles a version of libxslt prior to the patched release used in Apple's fix
User is affected if they have iCloud for Windows installed with version below 10.8, or an Apple Watch running watchOS below 6.1, or third-party apps using a vulnerable libxslt version.
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.
dbcve · scoped6.110.8
Update affected Apple products (watchOS 6.1+, iCloud for Windows 11.0+) or patch libxslt library in third-party applications to address the memory corruption issues.
iCloud for Windows 11.0; watchOS 6.1
- For iCloud for Windows: Download and install iCloud for Windows version 11.0 from the official Apple website or Microsoft Store
- For Apple Watch: Connect your Apple Watch to power, then open the Watch app on your paired iPhone and navigate to General > Software Update to install watchOS 6.1
- After updating, verify the installed versions: iCloud for Windows should show version 11.0, and Apple Watch should show watchOS 6.1
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 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-2019-8750 — 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-2019-8750 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
- No spam, self-promotion, credentials, or personal data