Apple · iOS, iPadOS, and macOS
CVE-2025-43300
Apple iOS, iPadOS, and macOS Out-of-Bounds Write Vulnerability
What it is
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: Apple iOS, iPadOS, and macOS contain an out-of-bounds write vulnerability in the Image I/O framework.
What to do
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Deadline for US federal agencies: September 11, 2025
More exploited flaws from Apple
| Added | Vulnerability | Product | Severity | Attack chance |
|---|---|---|---|---|
| Sep 11, 2023 | ImageIO Buffer Overflow | iOS, iPadOS, and macOS | High 7.8 | 53% |
| Apr 10, 2023 | IOSurfaceAccelerator Out-of-Bounds Write | iOS, iPadOS, and macOS | High 8.6 | 23% |
| Mar 30, 2023 | Out-of-Bounds Write | iOS, iPadOS, and macOS | High 7.8 | 5.2% |
| Sep 14, 2022 | Remote Code Execution | iOS, iPadOS, and macOS | High 7.8 | 5.6% |
| Sep 8, 2022 | Input Validation | iOS, iPadOS, and macOS | Medium 5.5 | 3.2% |
| Feb 11, 2022 | Webkit Use-After-Free | iOS, iPadOS, and macOS | High 8.8 | 16% |
| Nov 3, 2021 | WebKit Remote Code Execution | iOS, iPadOS, and macOS | Critical 9.8 | 7.7% |
| Nov 3, 2021 | WebKit Remote Code Execution | iOS, iPadOS, and macOS | Critical 9.8 | 7.0% |
Sources: Known Exploited Vulnerabilities (CISA, public domain), CVE records (cve.org) and EPSS (FIRST). The chance of attacks is the EPSS estimate that someone will try to exploit the flaw in the next 30 days.