CVE-2026-20639

HighCVSS 7.5/10Last modified Jun 17, 2026

Description

An integer overflow was addressed with improved input validation. This issue is fixed in macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, macOS Tahoe 26.3. Processing a maliciously crafted string may lead to heap corruption.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-190

Affected software

No affected versions have been published.

Timeline

Published
Mar 25, 2026
Last modified
Jun 17, 2026
NVD status
Analyzed

Related CVEs from 2026

CVE-2026-20645.4A vulnerability was identified in Portabilis i-Educar up to 2.10. Affected by this vulnerability is an unknown functionality of the file /inCVE-2026-206404.6An inconsistent user interface issue was addressed with improved state management. This issue is fixed in iOS 26.3 and iPadOS 26.3. An attacCVE-2026-206417.1A privacy issue was addressed with improved checks. This issue is fixed in iOS 18.7.5 and iPadOS 18.7.5, iOS 26.3 and iPadOS 26.3, macOS SeqCVE-2026-206422.4An input validation issue was addressed. This issue is fixed in iOS 26.3 and iPadOS 26.3. A person with physical access to an iOS device mayCVE-2026-206435.4A cross-origin issue in the Navigation API was addressed with improved input validation. This issue is fixed in Background Security ImprovemCVE-2026-206446.5The issue was addressed with improved memory handling. This issue is fixed in Safari 26.3, iOS 18.7.5 and iPadOS 18.7.5, iOS 26.3 and iPadOSCVE-2026-206454.6An inconsistent user interface issue was addressed with improved state management. This issue is fixed in iOS 18.7.5 and iPadOS 18.7.5, iOS CVE-2026-206463.3A logging issue was addressed with improved data redaction. This issue is fixed in macOS Tahoe 26.3. A malicious app may be able to read senCVE-2026-206475.5This issue was addressed with improved data protection. This issue is fixed in macOS Tahoe 26.3. An app may be able to access sensitive userCVE-2026-206485.5A privacy issue was addressed by moving sensitive data to a protected location. This issue is fixed in macOS Tahoe 26.3. A malicious app mayCVE-2026-206497.5A logging issue was addressed with improved data redaction. This issue is fixed in iOS 26.3 and iPadOS 26.3, macOS Tahoe 26.3, tvOS 26.3, waCVE-2026-20658.8A security flaw has been discovered in Flycatcher Toys smART Pixelator 2.0. Affected by this issue is some unknown functionality of the comp
CVE-2026-20639: High severity, CVSS 7.5 | Vulnix