dbcve.org
Mac Os XOperating system · Apple

CVE-2019-8847

HIGH · 7.8 CVSS v3.1 Published 2020-10-27
Fix available
A fix is available. Upgrade to 10.15.2 or later.
See remediation →
81/100
Remediation priority · High
No privileges

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 · unedited
A memory corruption issue was addressed with improved memory handling. This issue is fixed in macOS Catalina 10.15.2, Security Update 2019-002 Mojave, and Security Update 2019-007 High Sierra. An application may be able to execute arbitrary code with kernel privileges.

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 confidence

This is a kernel-level memory corruption vulnerability in macOS that allows a malicious application to execute arbitrary code with kernel privileges. The issue was addressed through improved memory handling in the patched security updates.

MitigationApply the appropriate Apple security update: macOS Catalina 10.15.2, Security Update 2019-002 for Mojave, or Security Update 2019-007 for High Sierra.

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
Mac Os XOperating system
Affected:< 10.15.2

CVSS 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:3.1/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 checks

Work through these to decide whether this CVE applies to you.

  1. Determine the installed macOS version
    Open Terminal and run: sw_vers -productVersion
    Affected if The displayed version is below 10.15.2 (for example, 10.15.1, 10.14.x, 10.13.x, etc.)
  2. Identify the macOS release name
    Run: sw_vers -productVersion and sw_vers -buildVersion to confirm whether the system is running Catalina (10.15), Mojave (10.14), High Sierra (10.13), or an earlier version
    Affected if The system is running any macOS version earlier than Catalina 10.15.2, including Mojave 10.14.x or High Sierra 10.13.x
  3. Verify kernel patch status
    Check if the system has received Security Update 2019-002 (for Mojave) or Security Update 2019-007 (for High Sierra) by reviewing System Preferences > Security & Privacy > General for recent security updates
    Affected if The system has not installed the relevant 2019 security updates and remains on a version below 10.15.2

A system is affected if it is running any macOS version prior to 10.15.2 and has not applied the corresponding security update.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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 data
Upgrade available Upgrade to 10.15.2 or later
Fixed in 10.15.2
Interim mitigation

Apply the appropriate Apple security update: macOS Catalina 10.15.2, Security Update 2019-002 for Mojave, or Security Update 2019-007 for High Sierra.

Fix this in Mac Os X Scoped from the published advisory
  • Consultation2.0 h
  • Implementation4.0 h
  • Testing2.0 h
  • Review / QA1.0 h
9.0 hours of engineering $1,600
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,560.

Scan for this in your stack

Free · runs locally
dbcve dependency scanner

Check whether your project pulls in CVE-2019-8847 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.

Get it on GitHub Scan in the browser

References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2019-8847 in production — separate from our analysis above.

No notes yet

Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.

What this is

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.

What belongs here
  • 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