macOS Crash via Improper Memory Handling Fixed in Sequoia 15.7.4
CVE-2026-20605 Published on February 11, 2026
The issue was addressed with improved memory handling. This issue is fixed in macOS Sequoia 15.7.4, iOS 18.7.5 and iPadOS 18.7.5, macOS Tahoe 26.3, macOS Sonoma 14.8.4. An app may be able to crash a system process.
Vulnerability Analysis
CVE-2026-20605 can be exploited with physical 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 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-2026-20605 has been classified to as a Buffer Overflow vulnerability or weakness.
Products Associated with CVE-2026-20605
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Affected Versions
Apple macOS:- 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 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.