Advisory Details

March 10th, 2026

Apple macOS ImageIO SGI File Parsing Integer Overflow Remote Code Execution Vulnerability

CVE ID	CVE-2026-20675
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 ImageIO library is required to exploit this vulnerability but attack vectors may vary depending on the implementation. The specific flaw exists within the ImageIO framework. The issue results from the lack of proper validation of user-supplied data, which can result in an integer overflow before writing to memory. 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-us/126347
DISCLOSURE TIMELINE	2025-12-05 - Vulnerability reported to vendor 2026-03-10 - Coordinated public release of advisory 2026-03-10 - Advisory Updated
CREDIT	George Karchemsky (@gkarchemsky)

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