Advisory Details

November 13th, 2025

Apple macOS USD readAccessorData Heap-based Buffer Overflow Remote Code Execution Vulnerability

ZDI-25-1009
ZDI-CAN-27849

CVE ID CVE-2025-43384
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. Interaction with the USD library is required to exploit this vulnerability but attack vectors may vary depending on the implementation.

The specific flaw exists within the USD library. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based 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/125635
DISCLOSURE TIMELINE
  • 2025-08-07 - Vulnerability reported to vendor
  • 2025-11-13 - Coordinated public release of advisory
  • 2025-11-13 - Advisory Updated
CREDIT Michael DePlante (@izobashi) of Trend Zero Day Initiative
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