CVE-2021-30930
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 logic issue was addressed with improved state management. This issue is fixed in macOS Monterey 12.0.1. An attacker may be able to track users through their IP address.
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 confidenceThis is a logic flaw in macOS where improper state management allows an attacker to track users by obtaining their IP address. The vulnerability stems from the way the operating system handles network state or certain network-related APIs, potentially exposing user location information to malicious actors.
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< 12.0.1CVSS 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
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- Low
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/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.
-
Check installed macOS versionOpen Terminal and run: sw_vers -productVersionAffected if The version displayed is less than 12.0.1 (for example, 12.0, 11.x, 10.x, etc.)
-
Confirm macOS build numberRun: uname -a or system_profiler SPSoftwareDataType to get detailed version infoAffected if The build indicates an OS version prior to Monterey 12.0.1
-
Verify network exposure possibilityThis is a logic flaw in the OS network state handling - no specific feature toggle exists. The vulnerability is present by default in affected versions.Affected if Running any macOS version below 12.0.1 means the improper state management could allow external actors to obtain the system's IP address
If the installed macOS version is 12.0.1 or later, the environment is not affected by this CVE; versions below 12.0.1 are potentially affected by IP address exposure through improper network state management.
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 · scoped12.0.1
Apply the vendor patch by updating to macOS Monterey 12.0.1 or later. This is the primary remediation; there are no known workarounds for this issue.
macOS Monterey 12.0.1
- Back up all important data before upgrading the operating system
- Connect the Mac to power to prevent interruption during installation
- Open System Preferences (or System Settings on newer macOS)
- Navigate to Software Update or check for updates
- Download and install macOS Monterey 12.0.1 when available
- Restart the Mac when prompted to complete the installation
- Verify the installation by checking the macOS version in About This Mac
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation1.0 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 $1,424.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-30930 — 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-2021-30930 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
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.
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