CVE-2026-28848
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 buffer overflow was addressed with improved bounds checking. This issue is fixed in macOS Sequoia 15.7.7, macOS Tahoe 26.5. A remote attacker may be able to cause unexpected system 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 · moderate confidenceA buffer overflow vulnerability in macOS that allows a remote attacker to cause unexpected system termination (denial of service). The issue was addressed with improved bounds checking in the affected macOS versions.
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, < 15.7.7>= 26.0, < 26.5CVSS 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
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:N/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 your macOS version numberOpen Terminal and run: sw_vers -productVersionAffected if The command returns a version starting with 15.x or 26.x
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Verify if running macOS Sequoia (15.x)If the version starts with 15, note the full version (e.g., 15.3, 15.7.5)Affected if Version is 15.0 through 15.7.6 (anything below 15.7.7)
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Verify if running macOS Tahoe (26.x)If the version starts with 26, note the full version (e.g., 26.2, 26.4)Affected if Version is 26.0 through 26.4 (anything below 26.5)
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Confirm exact build if version matches affected rangesRun: sw_vers -buildVersion to see the specific buildAffected if Build corresponds to an unpatched version within the affected ranges
You are affected if your macOS version is 15.0-15.7.6 (Sequoia) or 26.0-26.4 (Tahoe); you are NOT affected if running 15.7.7+, 26.5+, or any version outside these ranges.
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 · scoped15.7.726.5
Apply the security update: upgrade to macOS Sequoia 15.7.7 or macOS Tahoe 26.5 (or later) to remediate this vulnerability.
macOS Sequoia 15.7.7 or macOS Tahoe 26.5
- Check your current macOS version by clicking the Apple menu > About This Mac
- Back up important data using Time Machine or another backup method
- Open System Settings > General > Software Update
- If an update is available, click Download and Install
- Alternatively, download macOS Sequoia 15.7.7 or macOS Tahoe 26.5 from the Apple website and install manually
- Restart your Mac when prompted to complete the installation
- Verify the update was successful by checking About This Mac shows version 15.7.7 or 26.5
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-2026-28848 — 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-2026-28848 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