CVE-2026-20679
Received Received - Intake

Unexpected App Termination in macOS via Malicious File

Publication date: 2026-08-21

Last updated on: 2026-08-21

Assigner: Apple Inc.

Description
The issue was addressed with improved checks. This issue is fixed in macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, macOS Tahoe 26.4. Processing a maliciously crafted file may lead to unexpected app termination.

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Meta Information

Published
2026-08-21
Last Modified
2026-08-21
Generated
2026-08-21
AI Q&A
2026-08-21
EPSS Evaluated
N/A
NVD
CVE-2026-20679
EUVD
EUVD-2026-63776

Affected Vendors & Products

Showing 3 associated CPEs
Vendor Product Version / Range
apple macos_sequoia 15.7.5
apple macos_sonoma 14.8.5
apple macos_tahoe 26.4

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This vulnerability involves a flaw in macOS where processing a maliciously crafted file may cause an app to terminate unexpectedly. The issue was fixed in macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, and macOS Tahoe 26.4 with improved checks to prevent such disruptions.

Impact Analysis

The vulnerability could lead to unexpected app crashes when opening malicious files, potentially disrupting normal use of your device. It does not appear to allow unauthorized data access or privilege escalation based on the provided description.

Mitigation Strategies

Update your macOS to the latest patched version: Sequoia 15.7.5, Sonoma 14.8.5, or Tahoe 26.4 to address the vulnerability. Avoid processing untrusted files until the update is applied.

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