# CVE-2025-43300: Apple iOS, iPadOS, and macOS Out-of-Bounds Write Vulnerability

> CVE-2025-43300: Apple iOS, iPadOS, and macOS Out-of-Bounds Write Vulnerability. CVSS 10.0 (CVSS 3.1), in CISA KEV.

Canonical: https://rewindex.com/cve/CVE-2025-43300
Last updated: 2026-06-17T09:23:42Z

- Published: 2025-08-21 00:27 UTC · Updated: 2026-06-17 09:23 UTC · Assigner: apple
- CVSS: 10.0 (CVSS 3.1) · Severity: Critical · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
- EPSS: 65.2%, 99th percentile (scored 2026-10-25)
- CISA KEV: yes, added 2025-08-21, federal due date 2025-09-11, ransomware use: Unknown

## 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.

## CISA 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.

## Affected vendors and products

- Apple: iOS and iPadOS
- Apple: iPadOS
- Apple: macOS

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2025-43300)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2025-43300)
- [https://support.apple.com/en-us/124925](https://support.apple.com/en-us/124925)
- [https://support.apple.com/en-us/124926](https://support.apple.com/en-us/124926)
- [https://support.apple.com/en-us/124927](https://support.apple.com/en-us/124927)
- [https://support.apple.com/en-us/124928](https://support.apple.com/en-us/124928)
- [https://support.apple.com/en-us/124929](https://support.apple.com/en-us/124929)
- [https://support.apple.com/en-us/125141](https://support.apple.com/en-us/125141)
- [https://support.apple.com/en-us/125142](https://support.apple.com/en-us/125142)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2025-43300 · Markdown: https://rewindex.com/cve/CVE-2025-43300.md · JSON: https://rewindex.com/api/v1/cves/CVE-2025-43300 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:16:35.878Z