What’s Vulnerable › Vulnerabilities

CVE-2023-40448

• Severity: high (CVSS 8.6 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-09-27 · updated 2026-06-17

Description

The issue was addressed with improved handling of protocols. This issue is fixed in tvOS 17, iOS 16.7 and iPadOS 16.7, watchOS 10, iOS 17 and iPadOS 17, macOS Sonoma 14. A remote attacker may be able to break out of Web Content sandbox.

Affected products

• Apple iPadOS: before 16.7 — fixed in 16.7
• Apple Iphone Os: before 16.7 — fixed in 16.7
• Apple macOS: before 14.0 — fixed in 14.0
• Apple tvOS: before 17.0 — fixed in 17.0
• Apple watchOS: before 10.0 — fixed in 10.0

How to fix

Upgrade to a fixed version: Apple iPadOS 16.7; Apple Iphone Os 16.7; Apple macOS 14.0; Apple tvOS 17.0; Apple watchOS 10.0. Check the vendor advisory for mitigations.

References

• http://seclists.org/fulldisclosure/2023/Oct/10
• http://seclists.org/fulldisclosure/2023/Oct/3
• http://seclists.org/fulldisclosure/2023/Oct/4
• http://seclists.org/fulldisclosure/2023/Oct/8
• https://support.apple.com/en-us/HT213927
• https://support.apple.com/en-us/HT213936
• https://support.apple.com/en-us/HT213937
• https://support.apple.com/en-us/HT213938
• https://support.apple.com/en-us/HT213940
• http://seclists.org/fulldisclosure/2023/Oct/10
• http://seclists.org/fulldisclosure/2023/Oct/3
• http://seclists.org/fulldisclosure/2023/Oct/4

Get alerted when CVE-2023-40448 or the next vulnerability affects your stack