CVE-2026-43761CWE-787

CVE-2026-43761

Medium · published September 15, 2026

CVSS v3.1

6.5

EPSS

Percentile

33.5

In the wild

Unconfirmed

What it is

An out-of-bounds write issue 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 malicious disk image may cause 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: 0.00404 · 33.5th percentile
Weakness: CWE-787 · Out-of-bounds Write
Published: 2026-09-15T01:17Z

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 (3)

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]

EPSS history

Timeline

16 SEP 04:27Z
EPSS moved — → 0%
epss
14 SEP 20:51Z
An out-of-bounds write issue was addressed with improved bounds checking
cvelistv5