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CVE-2025-43219 Apple CVE debrief

A vulnerability, CVE-2025-43219, was addressed with improved memory handling in macOS Sequoia 15.6. Processing a maliciously crafted image may corrupt process memory, with a CVSS score of 8.8 and HIGH severity. This issue affects Apple macOS Sequoia 15.6 and involves improper memory handling when processing images, potentially leading to memory corruption. The vulnerability has a CVSS score of 8.8, indicating HIGH severity. Apple has addressed this issue in macOS Sequoia 15.6. The CVE record was published on 2026-04-02T19:20:07.313Z and last modified on 2026-07-20T20:10:00.110Z.

Vendor
Apple
Product
macOS
CVSS
HIGH 8.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-04-02
Original CVE updated
2026-07-20
Advisory published
2026-04-02
Advisory updated
2026-07-20

Who should care

Administrators and users of Apple macOS Sequoia 15.6 should prioritize patching this HIGH severity vulnerability to prevent potential memory corruption attacks. Affected operators, platforms, vulnerability-management, and security teams should review the official advisory or CVE record to validate affected scope, severity, and vendor guidance.

Technical summary

The CVE-2025-43219 vulnerability in Apple macOS Sequoia 15.6 involves improper memory handling when processing images. This issue can lead to memory corruption with a CVSS score of 8.8, indicating HIGH severity. Apple has addressed this issue in macOS Sequoia 15.6. The vulnerability affects Apple macOS Sequoia 15.6 and involves improper memory handling when processing images, potentially leading to memory corruption.

Defensive priority

Apply patches for CVE-2025-43219 immediately due to its HIGH severity and potential for memory corruption attacks.

Recommended defensive actions

  • Apply the official patch from Apple
  • Inventory and update affected systems
  • Monitor for suspicious image processing activity
  • Review compensating controls for exposed systems while remediation is scheduled and verified
  • Check relevant monitoring, detection, and logs for exposed assets that need extra review

Evidence notes

The CVE record was published on 2026-04-02T19:20:07.313Z and last modified on 2026-07-20T20:10:00.110Z. The NVD entry is currently Analyzed. The vulnerability affects Apple macOS Sequoia 15.6 and involves improper memory handling when processing images, which can lead to memory corruption with a CVSS score of 8.8 and HIGH severity. Administrators and users should prioritize patching this vulnerability to prevent potential memory corruption attacks. Evidence limits suggest verifying affected scope, severity, and vendor guidance through official advisories.

Official resources

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-04-02T19:20:07.313Z and has not been modified since then.