CVE-2026-43773

CRITICAL

Apple macOS - Out-of-Bounds Access

Title source: rule
STIX 2.1

Description

An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. Mounting a maliciously crafted disk image may cause unexpected system termination or corrupt kernel memory.

Scores

CVSS v3 9.8
EPSS 0.0042
EPSS Percentile 34.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact total

Details

CWE
CWE-125
Status published
Products (4)
Apple/macOS < 14.8.8
Apple/macOS < 15.7.8
Apple/macOS < 26.6
apple/macos 14.0 - 14.8.8
Published Jul 27, 2026
Tracked Since Jul 28, 2026