macOS Tahoe 26.1: Heap Corrupt via Improper Memory Handling (CVE-2025-43402)
CVE-2025-43402 Published on December 12, 2025
The issue was addressed with improved memory handling. This issue is fixed in macOS Tahoe 26.1. An app may be able to cause unexpected system termination or corrupt process memory.
Vulnerability Analysis
CVE-2025-43402 is exploitable with local system access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be very high.
Weakness Type
What is a Memory Corruption Vulnerability?
The software writes data past the end, or before the beginning, of the intended buffer. Typically, this can result in corruption of data, a crash, or code execution. The software may modify an index or perform pointer arithmetic that references a memory location that is outside of the boundaries of the buffer. A subsequent write operation then produces undefined or unexpected results.
CVE-2025-43402 has been classified to as a Memory Corruption vulnerability or weakness.
Products Associated with CVE-2025-43402
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Affected Versions
Apple macOS:- Version unspecified and below 26.1 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.