Apple iOS, iPadOS, and macOS Out-of-Bounds Write Vulnerability
An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 15.8.5 and iPadOS 15.8.5, iOS 16.7.12 and iPadOS 16.7.12, iOS 18.6.2 and iPadOS 18.6.2, iPadOS 17.7.10, macOS Sequoia 15.6.1, macOS Sonoma 14.7.8, macOS Ventura 13.7.8. Processing a malicious image file may result in memory corruption. Apple is aware of a report that this issue may have been exploi
What happened
An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 15.8.5 and iPadOS 15.8.5, iOS 16.7.12 and iPadOS 16.7.12, iOS 18.6.2 and iPadOS 18.6.2, iPadOS 17.7.10, macOS Sequoia 15.6.1, macOS Sonoma 14.7.8, macOS Ventura 13.7.8. Processing a malicious image file may result in memory corruption. Apple is aware of a report that this issue may have been exploited in an extremely sophisticated attack against specific targeted individuals.
CISA lists it as exploited, added 21 Aug 2025.
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, follow applicable BOD 22-01 guidance for cloud services, 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: 13.0 up to the fix in 13.7.8
The record
- NVD status
- Analyzed
- Published
- 21 Aug 2025, last modified 17 Jun 2026 (NVD)
- Severity
- CVSS 3.1 base score 10.0, Critical — computed here from the vector; NVD states 10.0.
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
- Weakness
- CWE-787 Out-of-bounds Write (NVD; names by MITRE)
- Exploitation
- Listed in CISA’s Known Exploited Vulnerabilities catalogue since 21 Aug 2025; federal remediation due 11 Sep 2025. CISA entry
- Exploit probability
- EPSS 32.0%, 98th 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/124925Release NotesVendor Advisory
- support.apple.com/en-us/124926Release NotesVendor Advisory
- support.apple.com/en-us/124927Release NotesVendor Advisory
- support.apple.com/en-us/124928Release NotesVendor Advisory
- support.apple.com/en-us/124929Release NotesVendor Advisory
- support.apple.com/en-us/125141Release NotesVendor Advisory
- support.apple.com/en-us/125142Release NotesVendor Advisory
- seclists.org/fulldisclosure/2025/Sep/10Mailing ListThird Party Advisory
- seclists.org/fulldisclosure/2025/Sep/14Mailing ListThird Party Advisory
- seclists.org/fulldisclosure/2025/Sep/52Mailing ListThird Party Advisory
- github.com/b1n4r1b01/n-days/blob/main/CVE-2025-43300.mdExploitThird Party Advisory
- cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-43300US Government Resource
- github.com/cisagov/vulnrichment/issues/201Issue Tracking
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.