CVE-2025-43297
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 type confusion issue was addressed with improved memory handling. This issue is fixed in macOS Tahoe 26. An app may be able to cause a denial-of-service.
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 type confusion vulnerability in macOS allows a local application to trigger improper memory handling, leading to a denial-of-service condition. The fix involves improved memory handling in macOS Tahoe 26.
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< 26.0CVSS 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
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:L/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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Check macOS version in System SettingsOpen System Settings, click General, then About. Read the version number displayed next to 'macOS'.Affected if The version shown is less than 26.0 (for example, 25.x, 24.x, etc.)
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Check macOS version via System InformationOpen Finder, go to Applications > Utilities > System Information. In the left pane, select Software. The macOS version is displayed under the System Software overview.Affected if The reported version is below 26.0
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Check macOS version via terminalOpen Terminal and run: sw_vers -productVersionAffected if The output shows a version lower than 26.0 (such as 25.3.1, 24.5.0, etc.)
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Verify the type confusion contextThis vulnerability is exploitable by a local application. Confirm you are running macOS as the operating system.Affected if The system is running any macOS version below 26.0
If the installed macOS version is below 26.0, the environment is affected by this type confusion vulnerability that can be triggered by local applications.
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 · scoped26.0
Apply the macOS Tahoe 26 security update to resolve the type confusion vulnerability and prevent denial-of-service conditions.
macOS Tahoe 26.0
- Back up your Mac using Time Machine or another backup solution before upgrading
- Check your current macOS version by clicking the Apple menu > About This Mac
- Ensure your Mac is compatible with macOS Tahoe 26.0 by checking Apple's compatibility list
- Connect your Mac to power and a stable internet connection
- Open System Settings > General > Software Update
- If macOS Tahoe 26.0 is available, click Download and Install
- Follow the on-screen instructions to complete the upgrade
- Restart your Mac when prompted
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
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,376.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-43297 — 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-2025-43297 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