Apple OS Kernel Memcorrupt (iOS18.7.2, watchOS26.1, macOS15.7.2) fixed 26.1
CVE-2025-43520 Published on December 12, 2025
A memory corruption issue was addressed with improved memory handling. This issue is fixed in watchOS 26.1, iOS 18.7.2 and iPadOS 18.7.2, macOS Tahoe 26.1, visionOS 26.1, tvOS 26.1, macOS Sonoma 14.8.2, macOS Sequoia 15.7.2, iOS 26.1 and iPadOS 26.1. A malicious application may be able to cause unexpected system termination or write kernel memory.
Vulnerability Analysis
CVE-2025-43520 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.
Products Associated with CVE-2025-43520
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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.