CVE-2023-40403: Apple iOS and iPadOS · Processing web content may disclose sensitive information
Affects Apple iOS and iPadOSSource CVE Database V5
Not known to be exploited · fixed in 13.6 : update Apple iOS and iPadOS when convenient.
Data as of 25 Oct 2026, 19:02 UTC
Rated by Threat Radar · No CVSS score from NVD or the CNA
- EPSS
- 1.3% chance of exploitation in 30 days – higher than 70% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 13.6
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 2026-10-25.
Description
The issue was addressed with improved memory handling. This issue is fixed in macOS Ventura 13.6, tvOS 17, iOS 16.7 and iPadOS 16.7, macOS Monterey 12.7, watchOS 10, iOS 17 and iPadOS 17, macOS Sonoma 14. Processing web content may disclose sensitive information.
References
- support.apple.com/en-us/HT213938 (opens in a new tab)
- support.apple.com/en-us/HT213932 (opens in a new tab)
- support.apple.com/en-us/HT213927 (opens in a new tab)
- support.apple.com/en-us/HT213931 (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/5 (opens in a new tab)
- seclists.org/fulldisclosure/2023/Oct/10 (opens in a new tab)
- seclists.org/fulldisclosure/2023/Oct/6 (opens in a new tab)
- seclists.org/fulldisclosure/2023/Oct/8 (opens in a new tab)
- seclists.org/fulldisclosure/2023/Oct/9 (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)
- lists.debian.org/debian-lts-announce/2025/09/msg00024.html (opens in a new tab)
- support.apple.com/kb/HT213940 (opens in a new tab)
- support.apple.com/kb/HT213932 (opens in a new tab)
- support.apple.com/kb/HT213931 (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)