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Researchers claim the first macOS kernel exploit on Apple M5 chips

📅 15 May 2026 at 13:41 UTC📰 Cyber InsiderView original source ↗
Researchers claim the first macOS kernel exploit on Apple M5 chips

Security researchers have announced what they describe as the first public macOS kernel memory corruption exploit capable of bypassing Apple’s Memory Integrity Enforcement (MIE) protections on the latest M5 chip. The exploit chain, developed by researchers at Calif with assistance from the AI-assisted security platform Mythos Preview, reportedly achieves local privilege escalation on macOS 26.4.1 … The post Researchers claim the first macOS kernel exploit on Apple M5 chips appeared first on CyberInsider.

🤖 AI BriefingAuto-generated threat analysis
🔍Threat Overview

Researchers have announced the first public macOS kernel memory corruption exploit capable of bypassing Apple's Memory Integrity Enforcement (MIE) protections on the latest M5 chip, demonstrating a potential vulnerability in hardware-assisted mitigations against AI tools.

⚙️Technical Details
Affected Systems
macOS 26.4.1 running on Apple M5 hardware
Attack Vectors
data-only exploitation techniques manipulating existing memory structures and trusted execution paths
💥Impact Assessment
Severity: critical
Who Is at Risk
Users of macOS 26.4.1 running on Apple M5 hardware with unprivileged local accounts
🛡️Recommended Actions
1Apply patches as soon as available from Apple
2Monitor system calls and memory structures for suspicious activity
3Implement additional security controls to prevent data-only exploitation techniques
📦Affected Products
Product Family: macOSSpecific Product: 26.4.1Hardware: Apple M5

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