What’s Vulnerable › Vulnerabilities

CVE-2023-40436

• Severity: critical (CVSS 9.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-09-27 · updated 2026-06-17
• Weakness: CWE-125

Description

The issue was addressed with improved bounds checks. This issue is fixed in macOS Sonoma 14. An attacker may be able to cause unexpected system termination or read kernel memory.

Affected products

• Apple macOS: before 14.0 — fixed in 14.0

How to fix

Upgrade to a fixed version: Apple macOS 14.0. Check the vendor advisory for mitigations.

References

• http://seclists.org/fulldisclosure/2023/Oct/3
• https://support.apple.com/en-us/HT213940
• http://seclists.org/fulldisclosure/2023/Oct/3
• https://support.apple.com/en-us/HT213940
• https://support.apple.com/kb/HT213940

Get alerted when CVE-2023-40436 or the next vulnerability affects your stack