CVE-2025-43300
Critical 10.0 Exploited in the wild (KEV)
Confirmed active exploitation — CISA KEV catalog
- Name
- Apple iOS, iPadOS, and macOS Out-of-Bounds Write Vulnerability
- Added to catalog
- Remediation due date (US federal)
- Required action
- Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Description
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.
Metrics
- CVSS 3.1
-
10.0 (CRITICAL)
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H - EPSS — exploit probability
- 65% (percentile: 99) as of 1 November 2026
- CWE
- CWE-787
Affected products
apple: ipados; apple: iphone os; apple: macos
References
- https://support.apple.com/en-us/124925 Release NotesVendor Advisory
- https://support.apple.com/en-us/124926 Release NotesVendor Advisory
- https://support.apple.com/en-us/124927 Release NotesVendor Advisory
- https://support.apple.com/en-us/124928 Release NotesVendor Advisory
- https://support.apple.com/en-us/124929 Release NotesVendor Advisory
- https://support.apple.com/en-us/125141 Release NotesVendor Advisory
- https://support.apple.com/en-us/125142 Release NotesVendor Advisory
- https://github.com/b1n4r1b01/n-days/blob/main/CVE-2025-43300.md ExploitThird Party Advisory
- http://seclists.org/fulldisclosure/2025/Sep/10 Mailing ListThird Party Advisory
- http://seclists.org/fulldisclosure/2025/Sep/14 Mailing ListThird Party Advisory