CVE-2024-40841
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 write issue was addressed with improved bounds checking. This issue is fixed in macOS Sequoia 15, macOS Sonoma 14.7. Processing a maliciously crafted video file may lead to unexpected app termination.
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 · high confidenceAn out-of-bounds write vulnerability in macOS video processing components allows a maliciously crafted video file to write data beyond allocated buffer boundaries, causing application termination. The issue stems from insufficient bounds checking during video file parsing.
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, < 14.7CVSS 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
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/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.
-
Check installed macOS versionRun `sw_vers -productVersion` in Terminal or select Apple menu > About This MacAffected if The version is 14.0 through 14.6.x (anything less than 14.7)
-
Identify video processing usageCheck for applications or processes that handle video files, such as QuickTime, Final Cut Pro, third-party video editors, or any app that parses video filesAffected if Video processing applications are installed and used on the system
-
Verify video framework availabilityExamine /System/Library/Frameworks for video-related frameworks (AVFoundation.framework, CoreMedia.framework, VideoToolbox.framework) using `ls /System/Library/Frameworks/ | grep -i video`Affected if These frameworks exist on the system (present by default in macOS)
-
Check for sandboxed video servicesReview running processes for mediaanalysisd or other media processing services: `ps aux | grep -i media`Affected if Media processing services are running
A system is affected if it runs macOS version 14.0 through 14.6.x and has the capability to process video files through built-in frameworks or 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 · scoped14.7
Apply macOS security updates (Sonoma 14.7 or later, Sequoia 15 or later) to patch the vulnerability. Avoid opening untrusted video files until the update is installed.
macOS Sonoma 14.7 or macOS Sequoia 15
- Back up your Mac using Time Machine or another backup method before performing the update
- Check your current macOS version by clicking the Apple menu and selecting About This Mac
- Open System Settings > General > Software Update
- If macOS 14.7 or later is available, click Update Now to install the security update
- Alternatively, if macOS Sequoia 15 is offered, you can upgrade to that version which also contains the fix
- Restart your Mac when prompted to complete the installation
- After updating, verify the version by checking About This Mac shows version 14.7 or later
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation6.0 h
- Implementation12.0 h
- Testing6.0 h
- Review / QA3.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $7,680.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2024-40841 — 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-2024-40841 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