BaseFortify

Publication date: 2025-08-21

Last updated on: 2026-04-03

Assigner: Apple Inc.

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 Scores

EPSS Scores

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Meta Information

Published

2025-08-21

Last Modified

2026-04-03

Generated

2026-09-27

AI Q&A

2025-08-21

EPSS Evaluated

2026-09-26

NVD

CVE-2025-43300

Affected Vendors & Products

Vendor	Product	Version / Range
apple	ipados	From 18.0 (inc) to 18.6.2 (exc)
apple	macos	From 14.0 (inc) to 14.7.8 (exc)
apple	macos	From 15.0 (inc) to 15.6.1 (exc)
apple	ipados	to 15.8.5 (exc)
apple	ipados	From 16.0 (inc) to 16.7.12 (exc)
apple	iphone_os	to 15.8.5 (exc)
apple	iphone_os	From 16.0 (inc) to 16.7.12 (exc)
apple	ipados	From 17.0 (inc) to 17.7.10 (exc)
apple	iphone_os	From 17.0 (inc) to 18.6.2 (exc)
apple	macos	From 13.0 (inc) to 13.7.8 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-787	The product writes data past the end, or before the beginning, of the intended buffer.

Attack-Flow Graph

Executive Summary

This vulnerability is an out-of-bounds write issue that occurs due to insufficient bounds checking when processing image files. A maliciously crafted image file can trigger memory corruption, potentially allowing an attacker to execute arbitrary code or cause a system crash.

Impact Analysis

If exploited, this vulnerability can lead to memory corruption which may allow attackers to execute arbitrary code, compromise system integrity, or cause denial of service. It has been reported to be used in highly sophisticated attacks targeting specific individuals.

Mitigation Strategies

The immediate step to mitigate this vulnerability is to update affected Apple operating systems to the fixed versions: macOS Sonoma 14.7.8, macOS Ventura 13.7.8, iPadOS 17.7.10, macOS Sequoia 15.6.1, iOS 18.6.2, and iPadOS 18.6.2.

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