CVE intelligence and bounded remediation

CVE-2025-43338 — An out-of-bounds access issue was addressed with improved bounds checking

High CVSS 7.1

An out-of-bounds access issue was addressed with improved bounds checking. This issue is fixed in iOS 26 and iPadOS 26, macOS Sonoma 14.8.2, macOS Sonoma 14.8.4, macOS Tahoe 26. Processing a maliciously crafted media file may lead to unexpected app termination or corrupt process memory.

Severity
High
CVSS
7.1 (3.1)
Published
2025-11-04
CISA KEV
Not currently listed
Ecosystem
apple/platform
Weaknesses
CWE-79

Affected products

  • apple / ipados
  • apple / iphone_os
  • apple / macos

Matched remediation archetype

Cross-site scripting and unsafe browser output

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

Check exposure

  • Trace reflected, stored, and DOM-derived untrusted values into HTML, attributes, URLs, styles, scripts, and client-side template sinks.
  • Identify affected origins, authenticated user roles, sensitive browser capabilities, and where content is shared across tenants.
  • Review framework escaping, rich-text sanitization, legacy templates, and client-side rendering paths.

Remediate safely

  • Use context-aware framework output encoding and safe DOM APIs; keep untrusted data out of executable contexts.
  • Sanitize intentionally supported markup with a maintained allowlist policy and validate URLs and attributes separately.
  • Update affected rendering components and add tests for every output context using inert sentinel markup.

Authoritative sources

Complete CVE record and remediation plan

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