CVE-2021-30924
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 · uneditedA denial of service issue was addressed with improved state handling. This issue is fixed in macOS Monterey 12.0.1. A remote attacker can cause a device to unexpectedly restart.
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 confidenceA denial of service vulnerability in macOS Monterey involving improper state handling allows a remote attacker to cause an unexpected device restart. The issue is fixed in macOS Monterey 12.0.1 through improved state management logic.
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< 15.1< 15.1< 12.0.1< 15.1< 8.1CVSS 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
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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 your Apple operating systemDetermine which Apple OS is running: macOS on Mac computers, iOS on iPhone, iPadOS on iPad, tvOS on Apple TV, or watchOS on Apple WatchAffected if Device runs any of these Apple operating systems
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Check macOS version on MacOpen System Preferences > About, or run 'sw_vers -productVersion' in TerminalAffected if Version is below 12.0.1 (any 12.0, 11.x or earlier)
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Check iOS version on iPhoneOpen Settings > General > About on the iPhoneAffected if Version is below 15.1 (any 15.0 or earlier)
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Check iPadOS version on iPadOpen Settings > General > About on the iPadAffected if Version is below 15.1 (any 15.0 or earlier)
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Check tvOS version on Apple TVOpen Settings > General > About on Apple TVAffected if Version is below 15.1 (any 15.0 or earlier)
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Check watchOS version on Apple WatchOpen Settings > General > About on Apple Watch, or use Watch app on paired iPhoneAffected if Version is below 8.1 (any 8.0 or earlier)
Your device is affected if the installed OS version is below the security patch level for your platform: macOS below 12.0.1, iOS/iPadOS/tvOS below 15.1, or watchOS below 8.1
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 · scoped8.112.0.115.1
Apply macOS Monterey 12.0.1 or later security updates to resolve the state handling vulnerability that enables remote denial of service via device restart.
macOS Monterey 12.0.1 / iOS 15.1 / iPadOS 15.1 / tvOS 15.1 / watchOS 8.1 or later
- For macOS devices: Go to System Preferences > Software Update and upgrade to macOS Monterey 12.0.1 or later
- For iPhone/iPad devices: Go to Settings > General > Software Update and upgrade to iOS/iPadOS 15.1 or later
- For Apple TV devices: Go to Settings > System > Software Updates and enable update to tvOS 15.1 or later
- For Apple Watch devices: On the iPhone, open the Watch app, go to My Watch > General > Software Update and upgrade to watchOS 8.1 or later
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation1.0 h
- Implementation1.0 h
- Testing2.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-30924 — 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-2021-30924 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