CVE-2023-40448: Apple iOS and iPadOS · A remote attacker may be able to break out of Web Content sandbox
Affects Apple iOS and iPadOSSource CVE Database V5
Not known to be exploited.
Data as of 26 Oct 2026, 06:26 UTC
Rated High by the CNA (apple) · No CVSS score from NVD or the CNA
- EPSS
- 2.1% chance of exploitation in 30 days – higher than 82% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Exploitation evidence
Disclosed: evidence found.
CVE published 26 Sep 2023
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-26.
What to do
AI-suggested
A fix is available and has been released by Apple in iOS 16.7, iPadOS 16.7, tvOS 17, watchOS 10, iOS 17, iPadOS 17, and macOS Sonoma 14. Users and administrators should update affected Apple devices to these versions or later to mitigate this vulnerability.
Description
CVE-2023-40448 is a vulnerability in Apple iOS and iPadOS where a remote attacker may be able to break out of the Web Content sandbox. The issue was addressed by Apple through improved handling of protocols and fixed in multiple Apple operating system versions including iOS 16.7, iPadOS 16.7, tvOS 17, watchOS 10, iOS 17, iPadOS 17, and macOS Sonoma 14.
References
- support.apple.com/en-us/HT213938 (opens in a new tab)
- support.apple.com/en-us/HT213927 (opens in a new tab)
- support.apple.com/en-us/HT213936 (opens in a new tab)
- support.apple.com/en-us/HT213940 (opens in a new tab)
- support.apple.com/en-us/HT213937 (opens in a new tab)
- seclists.org/fulldisclosure/2023/Oct/10 (opens in a new tab)
- seclists.org/fulldisclosure/2023/Oct/8 (opens in a new tab)
- seclists.org/fulldisclosure/2023/Oct/3 (opens in a new tab)
- seclists.org/fulldisclosure/2023/Oct/4 (opens in a new tab)
- support.apple.com/kb/HT213940 (opens in a new tab)
- support.apple.com/kb/HT213927 (opens in a new tab)
- support.apple.com/kb/HT213938 (opens in a new tab)
- support.apple.com/kb/HT213937 (opens in a new tab)
- support.apple.com/kb/HT213936 (opens in a new tab)