CVE-2025-43326
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 bounds checking. This issue is fixed in macOS Sequoia 15.7, macOS Sonoma 14.8, macOS Tahoe 26. An app may be able to access sensitive user data.
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 confidenceCVE-2025-43326 is an out-of-bounds read vulnerability in macOS that was addressed with improved bounds checking. The vulnerability allows a malicious or compromised application to potentially access sensitive user data beyond intended memory boundaries. Patches are available for macOS Sequoia 15.7, macOS Sonoma 14.8, and 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>= 14.0, < 14.8>= 15.0, < 15.7CVSS 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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Check installed macOS versionRun 'sw_vers -productVersion' in Terminal or view System Settings > About This MacAffected if The version output matches 14.x or 15.x
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Determine if running vulnerable Sonoma versionIf the version starts with 14, check if it is less than 14.8 (e.g., 14.0, 14.5, 14.7)Affected if Version is 14.0 through 14.7 inclusive
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Determine if running vulnerable Sequoia versionIf the version starts with 15, check if it is less than 15.7 (e.g., 15.0, 15.5, 15.6)Affected if Version is 15.0 through 15.6 inclusive
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Confirm macOS build date as secondary checkRun 'sw_vers -buildVersion' and compare to known patched builds for your macOS versionAffected if Build version predates the security update release date for your macOS version
If the installed macOS version is 14.0-14.7 or 15.0-15.6, the system is affected by this out-of-bounds read vulnerability and should be updated to 14.8, 15.7, or macOS 26.
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 · scoped14.815.7
Apply the appropriate macOS security update (15.7, 14.8, or 26) to affected systems to remediate the vulnerability. Organizations should prioritize patching macOS systems that handle sensitive data.
macOS Sonoma 14.8 (for systems on macOS 14.x) or macOS Sequoia 15.7 (for systems on macOS 15.x)
- Back up important data on your Mac before performing any system update
- Go to System Settings > General > Software Update
- Check for available updates - the fix is included in macOS Sonoma 14.8 or macOS Sequoia 15.7
- Download and install the appropriate security update for your current macOS version
- Restart your Mac when prompted to complete the installation
- Verify the update was successful by checking System Settings > General > About to confirm the version number
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation4.0 h
- Implementation6.0 h
- Testing3.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $4,304.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-43326 — 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-2025-43326 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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