What’s Vulnerable › Vulnerabilities

CVE-2023-40423

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-10-25 · updated 2026-06-17
• Weakness: CWE-119

Description

The issue was addressed with improved memory handling. This issue is fixed in iOS 17.1 and iPadOS 17.1, macOS Monterey 12.7.1, iOS 16.7.2 and iPadOS 16.7.2, macOS Ventura 13.6.1, macOS Sonoma 14.1. An app may be able to execute arbitrary code with kernel privileges.

Affected products

• Apple iPadOS: before 16.7.2; from 17.0 before 17.1 — fixed in 16.7.2, 17.1
• Apple Iphone Os: before 16.7.2; from 17.0 before 17.1 — fixed in 16.7.2, 17.1
• Apple macOS: from 12.0.0 before 12.7.1; from 13.0 before 13.6.1; from 14.0 before 14.1 — fixed in 12.7.1, 13.6.1, 14.1

How to fix

Upgrade to a fixed version: Apple iPadOS 16.7.2, 17.1; Apple Iphone Os 16.7.2, 17.1; Apple macOS 12.7.1, 13.6.1, 14.1. Check the vendor advisory for mitigations.

References

• http://seclists.org/fulldisclosure/2023/Oct/19
• http://seclists.org/fulldisclosure/2023/Oct/21
• http://seclists.org/fulldisclosure/2023/Oct/23
• http://seclists.org/fulldisclosure/2023/Oct/24
• http://seclists.org/fulldisclosure/2023/Oct/26
• https://support.apple.com/en-us/HT213981
• https://support.apple.com/en-us/HT213982
• https://support.apple.com/en-us/HT213983
• https://support.apple.com/en-us/HT213984
• https://support.apple.com/en-us/HT213985
• https://support.apple.com/kb/HT213981
• https://support.apple.com/kb/HT213982

Get alerted when CVE-2023-40423 or the next vulnerability affects your stack