Apple iOS, iPadOS, and macOS ImageIO Buffer Overflow Vulnerability
A buffer overflow issue was addressed with improved memory handling. This issue is fixed in iOS 16.6.1 and iPadOS 16.6.1, macOS Monterey 12.6.9, macOS Ventura 13.5.2, iOS 15.7.9 and iPadOS 15.7.9, macOS Big Sur 11.7.10. Processing a maliciously crafted image may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited.
What happened
A buffer overflow issue was addressed with improved memory handling. This issue is fixed in iOS 16.6.1 and iPadOS 16.6.1, macOS Monterey 12.6.9, macOS Ventura 13.5.2, iOS 15.7.9 and iPadOS 15.7.9, macOS Big Sur 11.7.10. Processing a maliciously crafted image may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited.
CISA lists it as exploited, added 11 Sep 2023.
Does it affect you
Names Apple macOS. Enter the product and version you run to place it against the affected range the vendor published.
What to do
- Follow the vendor advisory for the fixed release and any interim mitigation.
support.apple.com - Follow the vendor advisory for the fixed release and any interim mitigation.
support.apple.com - Follow the vendor advisory for the fixed release and any interim mitigation.
support.apple.com - Follow the vendor advisory for the fixed release and any interim mitigation.
support.apple.com - Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
cisa.gov
CISA’s notes for this entry:
Affected, as published to NVD
- macos
- Apple macOS: 11.0 up to the fix in 11.7.10
The record
- NVD status
- Analyzed
- Published
- 07 Sep 2023, last modified 17 Jun 2026 (NVD)
- Severity
- CVSS 3.1 base score 7.8, High — computed here from the vector; NVD states 7.8.
- Vector
- CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Weakness
- CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') (NVD; names by MITRE)
- Exploitation
- Listed in CISA’s Known Exploited Vulnerabilities catalogue since 11 Sep 2023; federal remediation due 02 Oct 2023. CISA entry
- Exploit probability
- EPSS 53.4%, 99th percentile — FIRST, scored 23 Oct 2026. FIRST EPSS
- Vendor
- Apple · iOS, iPadOS, and macOS (CISA)
References on the NVD record
- support.apple.com/en-us/HT213905Release NotesVendor Advisory
- support.apple.com/en-us/HT213906Release NotesVendor Advisory
- support.apple.com/en-us/HT213913Release NotesVendor Advisory
- support.apple.com/en-us/HT213914Release NotesVendor Advisory
- support.apple.com/en-us/HT213915Release NotesVendor Advisory
- support.apple.com/kb/HT213913Release NotesVendor Advisory
- support.apple.com/kb/HT213915Release NotesVendor Advisory
- cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-41064US Government Resource
- openwall.com/lists/oss-security/2023/09/21/4Mailing List
Sources
The verdict above is computed from the products and versions you entered and the affected ranges the vendor published to NVD. It does not inspect your environment, and this site never reports a product as unaffected: why.