CVE-2026-43682
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 memory handling. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. A remote user may be able to cause unexpected system termination or corrupt kernel 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 handling vulnerability in macOS kernel allows a remote attacker to cause unexpected system termination or corrupt kernel memory, leading to potential denial of service or potential privilege escalation via memory corruption.
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, < 14.8.8>= 15.0, < 15.7.8>= 26.0, < 26.6CVSS 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
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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.
-
Determine the installed macOS versionRun 'sw_vers -productVersion' in Terminal, or go to System Settings > General > About to view the version numberAffected if The version falls within the affected ranges: 14.0 to 14.8.7 (Sonoma), 15.0 to 15.7.7 (Sequoia), or 26.0 to 26.5 (Tahoe)
-
Confirm the build numberRun 'sw_vers -buildVersion' in Terminal to get the specific buildAffected if Build number is earlier than the patched builds for the respective version (26.6 for Tahoe, 15.7.8 for Sequoia, 14.8.8 for Sonoma)
-
Check for pending security updatesRun 'softwareupdate -l' in Terminal to list available updates, or go to System Settings > General > Software UpdateAffected if A security update for CVE-2026-43682 is available but has not been installed
The system is affected if it runs macOS Sonoma 14.0-14.8.7, Sequoia 15.0-15.7.7, or Tahoe 26.0-26.5 and has not received the corresponding security patch.
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 · scoped14.8.815.7.826.6
Apply the macOS security updates (Sequoia 15.7.8, Sonoma 14.8.8, or Tahoe 26.6) to all affected systems to remediate the kernel memory handling flaw.
macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, or macOS Tahoe 26.6 (depending on hardware)
- Identify the currently installed macOS version by going to Apple menu > About This Mac
- Back up important data before performing any system update
- Update to macOS Sequoia 15.7.8 OR macOS Sonoma 14.8.8 OR macOS Tahoe 26.6 depending on your hardware compatibility
- To update: Open System Settings > General > Software Update and install available updates
- Restart the system after the update completes
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-2026-43682 — 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-2026-43682 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