CVE-2025-30437
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 · uneditedThe issue was addressed with improved bounds checks. This issue is fixed in macOS Sequoia 15.4. An app may be able to corrupt coprocessor 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 confidenceA memory corruption vulnerability in macOS Sequoia allowed a malicious application to corrupt coprocessor memory due to insufficient bounds checking. The issue was addressed with improved bounds checks in macOS 15.4.
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>= 15.0, < 15.4CVSS 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
- High
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- None
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/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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Determine installed macOS versionClick the Apple menu, select 'About This Mac', or run 'sw_vers' in Terminal to retrieve the exact version numberAffected if The version shows 15.0 through 15.3.x (any build below 15.4)
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Confirm macOS lineage is SequoiaVerify the major version reported is 15, which corresponds to macOS SequoiaAffected if The major version is 15 and falls within the affected range
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Check for pending updatesOpen System Settings > General > Software Update to see if macOS 15.4 is available or installedAffected if Software Update shows 15.4 or later is available but not yet installed
You are affected if your macOS Sequoia is version 15.0 through 15.3.x; you are NOT affected if running 15.4 or later.
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 · scoped15.4
Update affected systems to macOS Sequoia 15.4 or later to apply the security patch.
macOS Sequoia 15.4
- Back up your Mac using Time Machine or another backup solution before updating
- Open System Settings (or System Preferences on older macOS)
- Navigate to General > Software Update
- Allow macOS to check for available updates
- If macOS Sequoia 15.4 or later is available, click Update Now or download and install the update
- Follow the on-screen instructions and allow the Mac to restart to complete the installation
- After the update completes, verify the version by clicking Apple menu > About This Mac - it should show version 15.4 or later
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-2025-30437 — 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-2025-30437 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
- No spam, self-promotion, credentials, or personal data