CVE-2026-64734

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Contact Data Leak in Apple iOS and macOS

Publication date: 2026-07-27

Last updated on: 2026-07-29

Assigner: Apple Inc.

Description

The issue was addressed with improved checks. This issue is fixed in iOS 26.6 and iPadOS 26.6, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6, visionOS 26.6, watchOS 26.6. Processing a maliciously crafted contact may leak sensitive data.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-07-27

Last Modified

2026-07-29

Generated

2026-08-17

AI Q&A

2026-07-28

EPSS Evaluated

2026-08-15

NVD

CVE-2026-64734

EUVD

EUVD-2026-49617

Affected Vendors & Products

Vendor	Product	Version / Range
apple	macos	From 14.0 (inc) to 14.8.8 (exc)
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)
apple	visionos	to 26.6 (exc)
apple	watchos	to 26.6 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-200	The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.

Attack-Flow Graph

Executive Summary

This vulnerability involves processing a maliciously crafted contact that may leak sensitive data. It was addressed with improved checks and fixed in multiple Apple operating systems including iOS, iPadOS, macOS, visionOS, and watchOS.

Detection Guidance

This vulnerability involves processing maliciously crafted contacts leading to sensitive data leaks. Detection requires checking system and application logs for unusual contact processing events or data exfiltration attempts. No specific commands are provided in the available context.

Impact Analysis

If exploited, this vulnerability could allow an attacker to access sensitive data by tricking a user into processing a specially crafted contact. This may lead to unauthorized information disclosure.

Compliance Impact

The provided CVE data does not specify how this vulnerability impacts compliance with standards like GDPR or HIPAA. The issue involves sensitive data leakage from maliciously crafted contacts, which could potentially violate data protection requirements depending on context.

Mitigation Strategies

Update affected Apple devices to the latest versions: iOS 26.6, iPadOS 26.6, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6, visionOS 26.6, or watchOS 26.6 to address the issue.

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