Advisory Details

March 10th, 2026

Apple macOS Audio APAC Frame Decoding Out-Of-Bounds Write Remote Code Execution Vulnerability

ZDI-26-173
ZDI-CAN-28497

CVE ID CVE-2026-20611
CVSS SCORE 7.8, AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
AFFECTED VENDORS Apple
AFFECTED PRODUCTS macOS
VULNERABILITY DETAILS

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Apple macOS. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists within the decoding of audio APAC frames. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process.

ADDITIONAL DETAILS Apple has issued an update to correct this vulnerability. More details can be found at:
https://support.apple.com/en-ca/126351
DISCLOSURE TIMELINE
  • 2025-12-16 - Vulnerability reported to vendor
  • 2026-03-10 - Coordinated public release of advisory
  • 2026-03-10 - Advisory Updated
CREDIT Anonymous
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