App Termination Vulnerability in macOS by Apple
CVE-2026-20679

4.3MEDIUM

Key Information:

Vendor

Apple
Status
Mac OS
Vendor
CVE Published:
21 August 2026

What is CVE-2026-20679?

A vulnerability in Apple's macOS allows for unexpected application termination when processing specially crafted files. This could potentially be exploited, leading to disruptions in user experience and application stability. Apple has released updates to address this vulnerability, improving the system's input validation mechanisms in macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, and macOS Tahoe 26.4 to mitigate these risks.

Affected Version(s)

macOS 0 < 14.8.5

macOS 0 < 15.7.5

macOS 0 < 26.4

References

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

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.