CVE-2026-20679 - Vulnerability Details - OpenCVE

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.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact Low

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact partial

Vendors	Products
Apple	Macos

No data.

No data.

References

Link	Providers
https://support.apple.com/en-us/126794
https://support.apple.com/en-us/126795
https://support.apple.com/en-us/126796

History

Fri, 21 Aug 2026 23:45:00 +0000

Type	Values Removed	Values Added
Title		Malicious File Triggers Application Crash in macOS

Fri, 21 Aug 2026 22:45:00 +0000

Type	Values Removed	Values Added
Title	Unexpected Application Termination on macOS Due to Malicious File Processing
Weaknesses	CWE-20

Fri, 21 Aug 2026 20:30:00 +0000

Type	Values Removed	Values Added
Weaknesses		CWE-125 CWE-416
Metrics		cvssV3_1 `{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L'}` ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Fri, 21 Aug 2026 04:15:00 +0000

Type	Values Removed	Values Added
Title		Unexpected Application Termination on macOS Due to Malicious File Processing
Weaknesses		CWE-20

Fri, 21 Aug 2026 02:45:00 +0000

Type	Values Removed	Values Added
First Time appeared		Apple Apple macos
Vendors & Products		Apple Apple macos

Fri, 21 Aug 2026 01:00:00 +0000

Type	Values Removed	Values Added
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.
References		https://support.apple.com/en-us/126794 https://support.apple.com/en-us/126795 https://support.apple.com/en-us/126796

MITRE

Status: PUBLISHED

Assigner: apple

Published: 2026-08-21T00:38:59.996Z

Updated: 2026-08-21T19:48:44.209Z

Reserved: 2025-11-11T14:43:07.872Z

Link: CVE-2026-20679

Vulnrichment

Updated: 2026-08-21T19:48:13.480Z

NVD

Status : Received

Published: 2026-08-21T01:16:59.830

Modified: 2026-08-21T20:16:33.657

Link: CVE-2026-20679

Redhat

No data.

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