dbcve.org
Mac Os XOperating system · Apple

CVE-2016-4634

HIGH · 7.8 CVSS v3.0 Published 2016-07-22
Fix available
A fix is available. Upgrade to after 10.11.5 or later.
See remediation →
80/100
Remediation priority · High
Zero-click

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 · unedited
The Graphics Drivers subsystem in Apple OS X before 10.11.6 allows local users to gain privileges or cause a denial of service (memory corruption) via unspecified vectors.

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 confidence

A memory corruption vulnerability in the Graphics Drivers subsystem of Apple OS X prior to version 10.11.6 allows local authenticated users to escalate privileges or cause a denial of service via unspecified vectors.

MitigationUpgrade Apple OS X to version 10.11.6 or later to apply the graphics driver patch.

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
Mac Os XOperating system
Affected:<= 10.11.5

CVSS 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
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.0/AV:L/AC:L/PR:L/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 checks

Work through these to decide whether this CVE applies to you.

  1. Check the installed Mac OS X version
    Open Terminal and run: sw_vers -productVersion, or click Apple menu > About This Mac
    Affected if The version displayed is 10.11.5 or earlier (any version <= 10.11.5)
  2. Confirm the major OS is Apple Mac OS X
    Verify the output from the previous command starts with '10.11' (the 10.11.x series is OS X El Capitan)
    Affected if The version starts with 10.11.x and the minor version is 5 or lower
  3. Verify the patch version is below 10.11.6
    Compare your full version number (for example, 10.11.0, 10.11.1, 10.11.2, 10.11.3, 10.11.4, or 10.11.5) against 10.11.6
    Affected if The exact version is 10.11.5 or any earlier 10.11.x release

You are affected if your Mac is running any version of Apple Mac OS X 10.11 through 10.11.5 inclusive; version 10.11.6 or later (including macOS Sierra and later) is not vulnerable.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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.

From vendor data
Upgrade available Upgrade to a release after 10.11.5
Interim mitigation

Upgrade Apple OS X to version 10.11.6 or later to apply the graphics driver patch.

Fix this in Mac Os X Scoped from the published advisory
  • Consultation2.0 h
  • Implementation2.0 h
  • Testing3.0 h
  • Review / QA1.0 h
8.0 hours of engineering $1,390
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,224.

Scan for this in your stack

Free · runs locally
dbcve dependency scanner

Check whether your project pulls in CVE-2016-4634 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.

Get it on GitHub Scan in the browser

References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2016-4634 in production — separate from our analysis above.

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.

What this is

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.

What belongs here
  • 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