CVE-2025-43300
Apple iOS, iPadOS, and macOS Out-of-Bounds Write Vulnerability is confirmed as actively exploited and is listed in the CISA KEV catalog.
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.
CISA notes
https://support.apple.com/en-us/124925 ; https://support.apple.com/en-us/124926 ; https://support.apple.com/en-us/124927 ; https://support.apple.com/en-us/124928 ; https://support.apple.com/en-us/124929 ; https://nvd.nist.gov/vuln/detail/CVE-2025-43300
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.
Severity
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:HAffected Products
| Vendor | Product | Affected versions |
|---|---|---|
| Apple | iOS and iPadOS | 0 to <15.8.5 0 to <16.7.12 0 to <18.6.2 |
| Apple | iPadOS | 0 to <17.7.10 |
| Apple | macOS | 0 to <13.7.8 0 to <14.7.8 0 to <15.6.1 |
References
11 Links- https://support.apple.com/en-us/124925
- https://support.apple.com/en-us/124926
- https://support.apple.com/en-us/124927
- https://support.apple.com/en-us/124928
- https://support.apple.com/en-us/124929
- https://support.apple.com/en-us/125141
- https://support.apple.com/en-us/125142
- https://github.com/b1n4r1b01/n-days/blob/main/CVE-2025-43300.md
- http://seclists.org/fulldisclosure/2025/Sep/52
- http://seclists.org/fulldisclosure/2025/Sep/14
- http://seclists.org/fulldisclosure/2025/Sep/10
Record Details
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