What’s Vulnerable › Vulnerabilities
CVE-2025-43300: Apple iOS, iPadOS, and macOS Out-of-Bounds Write Vulnerability
- Severity: critical (CVSS 10.0 v3.1)
- Exploited in the wild: yes — in CISA KEV since 2025-08-21
- EPSS: 65.2% probability of exploitation in the next 30 days
- Public exploit or detection template: yes
- Published: 2025-08-21 · updated 2026-06-17
- Weakness: CWE-787
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.
Affected products
- Apple iPadOS: before 15.8.5; from 16.0 before 16.7.12; from 17.0 before 17.7.10; from 18.0 before 18.6.2 — fixed in 15.8.5, 16.7.12, 17.7.10, 18.6.2
- Apple Iphone Os: before 15.8.5; from 16.0 before 16.7.12; from 17.0 before 18.6.2 — fixed in 15.8.5, 16.7.12, 18.6.2
- Apple macOS: from 13.0 before 13.7.8; from 14.0 before 14.7.8; from 15.0 before 15.6.1 — fixed in 13.7.8, 14.7.8, 15.6.1
How to fix
Upgrade to a fixed version: Apple iPadOS 15.8.5, 16.7.12, 17.7.10, 18.6.2; Apple Iphone Os 15.8.5, 16.7.12, 18.6.2; Apple macOS 13.7.8, 14.7.8, 15.6.1. Check the vendor advisory for mitigations.
References
- 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
- http://seclists.org/fulldisclosure/2025/Sep/10
- http://seclists.org/fulldisclosure/2025/Sep/14
- http://seclists.org/fulldisclosure/2025/Sep/52
- https://github.com/b1n4r1b01/n-days/blob/main/CVE-2025-43300.md
- https://github.com/cisagov/vulnrichment/issues/201
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