What’s Vulnerable › Vulnerabilities

CVE-2023-23540

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-05-08 · updated 2026-06-17

Description

The issue was addressed with improved memory handling. This issue is fixed in iOS 15.7.8 and iPadOS 15.7.8, macOS Monterey 12.6.4, iOS 16.4 and iPadOS 16.4, macOS Big Sur 11.7.5. An app may be able to execute arbitrary code with kernel privileges.

Affected products

• Apple iPadOS: before 15.7.8; from 16.0 before 16.4 — fixed in 15.7.8, 16.4
• Apple Iphone Os: before 15.7.8; from 16.0 before 16.4 — fixed in 15.7.8, 16.4
• Apple macOS: before 11.7.5; from 12.0 before 12.6.4 — fixed in 11.7.5, 12.6.4

How to fix

Upgrade to a fixed version: Apple iPadOS 15.7.8, 16.4; Apple Iphone Os 15.7.8, 16.4; Apple macOS 11.7.5, 12.6.4. Check the vendor advisory for mitigations.

References

• https://support.apple.com/en-us/HT213675
• https://support.apple.com/en-us/HT213676
• https://support.apple.com/en-us/HT213677
• https://support.apple.com/en-us/HT213842
• https://support.apple.com/en-us/HT213675
• https://support.apple.com/en-us/HT213676
• https://support.apple.com/en-us/HT213677
• https://support.apple.com/en-us/HT213842

Get alerted when CVE-2023-23540 or the next vulnerability affects your stack