Apple OS memory corruption causing appinitiated termination pre26.1
CVE-2025-43398 Published on November 4, 2025
The issue was addressed with improved memory handling. This issue is fixed in tvOS 26.1, watchOS 26.1, macOS Tahoe 26.1, iOS 26.1 and iPadOS 26.1, iOS 18.7.2 and iPadOS 18.7.2, macOS Sequoia 15.7.2, macOS Sonoma 14.8.2, visionOS 26.1. An app may be able to cause unexpected system termination.
Vulnerability Analysis
CVE-2025-43398 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 have no impact on confidentiality and integrity, and a high impact on availability.
Weakness Type
What is a Buffer Overflow Vulnerability?
The software performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer.
CVE-2025-43398 has been classified to as a Buffer Overflow vulnerability or weakness.
Products Associated with CVE-2025-43398
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Affected Versions
Apple macOS:- Version unspecified and below 14.8 is affected.
- Version unspecified and below 26.1 is affected.
- Version unspecified and below 26.1 is affected.
- Version unspecified and below 26.1 is affected.
- Version unspecified and below 26.1 is affected.
- Version unspecified and below 15.7 is affected.
- Version unspecified and below 26.1 is affected.
- Version unspecified and below 18.7 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.