CVE-2020-29629
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 read was addressed with improved input validation. This issue is fixed in macOS Big Sur 11.0.1. A malicious application may be able to read restricted memory.
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 confidenceOut-of-bounds read vulnerability in macOS that allowed a malicious application to read restricted memory. The vulnerability was addressed with improved input validation and fixed in macOS Big Sur 11.0.1.
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< 11.0.1CVSS 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
- None
- Availability
- None
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
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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Confirm macOS is the running operating systemOpen Terminal and run 'uname -s' or check System Preferences > About to verify the operating system is Darwin/macOSAffected if The system is not running macOS (e.g., Linux, Windows) - this vulnerability only affects macOS
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Identify the installed macOS version numberRun 'sw_vers -productVersion' in Terminal, or go to Apple menu > About This Mac to view the macOS version (e.g., 10.15.7, 11.0, 11.0.1)Affected if The command fails or the system does not report a macOS version number
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Compare installed version against affected rangeCompare the version from step 2 to 11.0.1 - any version lower than 11.0.1 (such as 10.15.x, 10.14.x, 10.13.x, or early 11.0.0 releases) falls within the affected rangeAffected if The installed version is less than 11.0.1 (e.g., 10.15.7, 10.14.6, 11.0.0)
If the system runs macOS with a version lower than 11.0.1, the environment is affected by this out-of-bounds read vulnerability.
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 · scoped11.0.1
Update macOS to version 11.0.1 or later to remediate this vulnerability.
macOS Big Sur 11.0.1 or later
- Back up important data before upgrading
- Ensure your Mac meets the hardware requirements for macOS Big Sur
- Upgrade to macOS Big Sur 11.0.1 or later by checking for updates in System Preferences > Software Update, or download and install from the Mac App Store
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 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 $1,744.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2020-29629 — 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-2020-29629 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
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