Apple macOS/iOS Kernel Mem Corrupt (pre-26.3/18.7.5)
CVE-2026-20621 Published on February 11, 2026
The issue was addressed with improved memory handling. This issue is fixed in macOS Tahoe 26.3, macOS Sonoma 14.8.4, macOS Sequoia 15.7.4, iOS 18.7.5 and iPadOS 18.7.5, visionOS 26.3, iOS 26.3 and iPadOS 26.3. An app may be able to cause unexpected system termination or corrupt kernel memory.
Products Associated with CVE-2026-20621
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Affected Versions
Apple macOS:- Version unspecified and below 26.3 is affected.
- Version unspecified and below 26.3 is affected.
- Version unspecified and below 15.7 is affected.
- Version unspecified and below 14.8 is affected.
- Version unspecified and below 26.3 is affected.
- Version unspecified and below 18.7 is affected.
Exploit Probability
EPSS
0.02%
Percentile
6.11%
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.