CVE intelligence and bounded remediation

CVE-2016-4778 — Apple Iphone Os security vulnerability

High CVSS 9.3

The kernel in Apple iOS before 10, OS X before 10.12, tvOS before 10, and watchOS before 3 allows attackers to execute arbitrary code in a privileged context or cause a denial of service (memory corruption) via a crafted app.

Severity
High
CVSS
9.3 (2.0)
Published
2016-09-25
CISA KEV
Not currently listed
Ecosystem
apple/platform
Weaknesses
CWE-264

Affected products

  • apple / iphone_os
  • apple / mac_os_x
  • apple / tvos
  • apple / watchos

Matched remediation archetype

Command, code, expression, and template injection

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Check exposure

  • Trace untrusted values to process execution, interpreters, evaluators, template engines, dynamic imports, and administrative scripting features.
  • Determine whether the affected path is reachable across each trust boundary and which service account or host privilege it inherits.
  • Review configuration for optional execution features, unsafe compatibility modes, and shell invocation.

Remediate safely

  • Replace string-built commands or evaluated code with fixed operations and structured argument APIs that do not invoke a shell.
  • Use strict allowlists for operation identifiers and reject unexpected input before it reaches any interpreter.
  • Update the affected component and add inert regression tests covering metacharacters, encoding variants, and alternate request paths.

Authoritative sources

Complete CVE record and remediation plan

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