CVE-2026-43733

Analyzed Analyzed - Analysis Complete

Memory Corruption in iOS and macOS via Malicious Image

Publication date: 2026-07-27

Last updated on: 2026-07-28

Assigner: Apple Inc.

Description

The issue was addressed with improved memory handling. This issue is fixed in iOS 26.6 and iPadOS 26.6, macOS Sequoia 15.7.8, macOS Tahoe 26.6. Processing a maliciously crafted image may corrupt process memory.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-07-27

Last Modified

2026-07-28

Generated

2026-08-17

AI Q&A

2026-07-28

EPSS Evaluated

2026-08-15

NVD

CVE-2026-43733

EUVD

EUVD-2026-49492

Affected Vendors & Products

Vendor	Product	Version / Range
apple	macos	From 15.0 (inc) to 15.7.8 (exc)
apple	macos	From 26.0 (inc) to 26.6 (exc)
apple	ipados	to 26.6 (exc)
apple	iphone_os	to 26.6 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-119	The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.

Attack-Flow Graph

Executive Summary

This vulnerability involves memory corruption that can occur when processing a maliciously crafted image. It was addressed by improving memory handling in specific Apple operating systems.

Detection Guidance

This vulnerability involves processing maliciously crafted images that may corrupt process memory. Detection primarily involves checking system and application logs for crashes or memory corruption events after image processing. Monitor for unexpected application terminations or system instability when handling images. Ensure all devices are updated to the fixed versions mentioned (iOS 26.6, iPadOS 26.6, macOS Sequoia 15.7.8, macOS Tahoe 26.6).

Impact Analysis

Processing a malicious image could lead to memory corruption, potentially causing crashes or unexpected behavior in affected Apple devices running iOS, iPadOS, or macOS.

Compliance Impact

The provided CVE data does not specify how this vulnerability impacts compliance with standards like GDPR or HIPAA. The issue involves memory corruption from processing malicious images, which could potentially lead to unauthorized data access or processing. However, no direct information is given about regulatory implications.

Mitigation Strategies

Update affected systems to the latest patched versions: iOS 26.6, iPadOS 26.6, macOS Sequoia 15.7.8, or macOS Tahoe 26.6. Avoid processing untrusted or maliciously crafted images until updates are applied.

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