CVE-2022-42847
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 out-of-bounds write issue was addressed with improved input validation. This issue is fixed in macOS Ventura 13.1. An app 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 confidenceAn out-of-bounds write vulnerability in the macOS kernel allows a malicious application to execute arbitrary code with kernel-level privileges. The fix implemented improved input validation to prevent the out-of-bounds memory write.
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< 13.1CVSS 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
- 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 checksWork through these to decide whether this CVE applies to you.
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Identify the macOS version installedOpen System Settings > About, or run 'sw_vers' in Terminal, or run 'system_profiler SPSoftwareDataType'Affected if The version displayed is earlier than 13.1 (such as 13.0, 12.x, 11.x, or earlier)
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Check the macOS build number for precisionRun 'sw_vers -buildVersion' in Terminal and compare against the build numbers for 13.1 and laterAffected if The build number is lower than the build numbers included in macOS 13.1 security update
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Verify if the security update has been appliedCheck System Settings > General > Software Update for installed updates, or review the system log for recent security patchesAffected if The macOS 13.1 security update or later has not been installed on the system
The system is affected if it is running any macOS version earlier than 13.1 and the corresponding security update has not been installed.
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 · scoped13.1
Apply the macOS Ventura 13.1 security update (or later) which contains the fix for this kernel-level privilege escalation vulnerability.
macOS Ventura 13.1 or later
- Back up your Mac using Time Machine or another backup solution before starting the upgrade
- Connect your Mac to a power source to ensure the update isn't interrupted
- Open System Settings (or System Preferences on older macOS versions)
- Click on General in the sidebar
- Click on Software Update
- Allow macOS to check for available updates
- If macOS Ventura 13.1 or later is available, click Download and Install
- Follow the on-screen instructions to complete the installation
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation4.0 h
- Implementation8.0 h
- Testing12.0 h
- Review / QA6.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $8,192.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2022-42847 — 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-2022-42847 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