Apple macOS Buffer Overflow Fixed in Sequoia 15.7.8, Sonoma 14.8.8, Tahoe 26.6
CVE-2026-43750 Published on July 27, 2026
A buffer overflow was addressed with improved bounds checking. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. An app may be able to execute arbitrary code out of its sandbox or with certain elevated privileges.
Vulnerability Analysis
CVE-2026-43750 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be critical as this vulnerability has a high impact to the confidentiality, integrity and availability of this component.
Weakness Type
What is a Classic Buffer Overflow Vulnerability?
The program copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. A buffer overflow condition exists when a program attempts to put more data in a buffer than it can hold, or when a program attempts to put data in a memory area outside of the boundaries of a buffer. The simplest type of error, and the most common cause of buffer overflows, is the "classic" case in which the program copies the buffer without restricting how much is copied. Other variants exist, but the existence of a classic overflow strongly suggests that the programmer is not considering even the most basic of security protections.
CVE-2026-43750 has been classified to as a Classic Buffer Overflow vulnerability or weakness.
Products Associated with CVE-2026-43750
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Affected Versions
Apple macOS:- Before 14.8.8 is affected.
- Before 15.7.8 is affected.
- Before 26.6 is affected.