CVE-2026-84519CWE-787

CVE-2026-84519

Medium · published September 15, 2026

CVSS v3.1

6.5

EPSS

Percentile

35.0

In the wild

Unconfirmed

What it is

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 26.7 and iPadOS 26.7, iOS 27 and iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. Mounting a disk image with maliciously crafted files may lead to unexpected system termination.

The record

Technical detail

CVSS v3.1: 6.5 · MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS v4.0: Not supplied
EPSS: 0.00417 · 35.0th percentile
Weakness: CWE-787 · Out-of-bounds Write
Published: 2026-09-15T01:17Z

Affected products (4)

Product	Versions	Fixed in
apple/ipados	< 26.7	26.7
apple/iphone_os	< 26.7	26.7
apple/macos	≥ 15.0, < 15.8	15.8
apple/macos	≥ 26.0, < 26.7	26.7

References (5)

https://support.apple.com/en-us/149034 · [email protected]https://support.apple.com/en-us/149035 · [email protected]https://support.apple.com/en-us/149041 · [email protected]https://support.apple.com/en-us/149042 · [email protected]https://support.apple.com/en-us/149043 · [email protected]

EPSS history

Timeline

17 SEP 03:33Z
EPSS moved — → 0%
epss
14 SEP 20:50Z
An out-of-bounds write issue was addressed with improved bounds checking
cvelistv5