CVE-2026-43809CWE-125

CVE-2026-43809

Critical · published July 28, 2026

CVSS v3.1

9.8

EPSS

Percentile

48.3

In the wild

Unconfirmed

What it is

An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. An app may be able to cause unexpected system termination.

The record

Technical detail

CVSS v3.1: 9.8 · CRITICAL
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0: Not supplied
EPSS: 0.00605 · 48.3th percentile
Weakness: CWE-125 · Out-of-bounds Read
Published: 2026-07-28T01:17Z

Affected products (3)

Product	Versions	Fixed in
apple/macos	≥ 14.0, < 14.8.8	14.8.8
apple/macos	≥ 15.0, < 15.7.8	15.7.8
apple/macos	≥ 26.0, < 26.6	26.6

References (4)

https://support.apple.com/en-us/128067 · [email protected]https://support.apple.com/en-us/128071 · [email protected]https://support.apple.com/en-us/128072 · [email protected]https://support.apple.com/en-us/148287 · [email protected]

EPSS history

Timeline

27 JUL 20:14Z
An out-of-bounds read was addressed with improved bounds checking
cvelistv5