CVE-2026-20679CWE-125CWE-416

CVE-2026-20679

Medium · published August 21, 2026

CVSS v3.1

4.3

EPSS

Percentile

28.2

In the wild

Unconfirmed

What it is

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.

The record

Technical detail

CVSS v3.1: 4.3 · MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
CVSS v4.0: Not supplied
EPSS: 0.00357 · 28.2th percentile
Weaknesses: CWE-125 · Out-of-bounds Read; CWE-416 · Use After Free
Published: 2026-08-21T05:16Z

Affected products (3)

Product	Versions	Fixed in
apple/macos	≥ 14.0, < 14.8.5	14.8.5
apple/macos	≥ 15.0, < 15.7.5	15.7.5
apple/macos	≥ 26.0, < 26.4	26.4

References (3)

https://support.apple.com/en-us/126794 · [email protected]https://support.apple.com/en-us/126795 · [email protected]https://support.apple.com/en-us/126796 · [email protected]

EPSS history

Timeline

21 AUG 00:38Z
The issue was addressed with improved checks
cvelistv5