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

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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Attack vector

Network

Complexity

Low

Privileges

None

User interaction

None

Confidentiality

High

Integrity

High

Availability

High

Scope

Changed

Exploitation

Is it being used?

Exploit prediction (EPSS)65.2% · higher than 99% of CVEs

Exploited in the wildYes

CISA KEVListed Aug 21, 2025

Federal remediation dueSep 11, 2025

Ransomware campaign useNot known

Affected products

Which versions

IO

iOS · Apple

before 17.7.10 · source: vendor, NVD

MA

macOS · Apple

before 13.7.8; before 14.7.8; before 15.6.1 · source: vendor, NVD

IA

iOS and iPadOS · Apple

before 15.8.5; before 16.7.12; before 18.6.2 · source: vendor

II

iOS, iPadOS, and macOS · Apple

All versions, or not specified · source: KEV