Advisory Details

May 12th, 2026

Apple macOS USD File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability

CVE ID	CVE-2026-28940
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 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/127115
DISCLOSURE TIMELINE	2026-02-12 - Vulnerability reported to vendor 2026-05-12 - Coordinated public release of advisory 2026-05-12 - Advisory Updated
CREDIT	Michael DePlante (@izobashi) of TrendAI Zero Day Initiative

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