CVE-2026-43761: Security vulnerability

Published Sep 14, 2026

Updated

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.

Affected Software

0 affected components

Remediation

Recommended actions to resolve this vulnerability, in priority order.

Upgrade
Upgrade macOS Sequoia to a version that resolves this vulnerability.
Fixed in 15.7.8
Upgrade
Upgrade macOS Sonoma to a version that resolves this vulnerability.
Fixed in 14.8.8
Upgrade
Upgrade macOS Tahoe to a version that resolves this vulnerability.
Fixed in 26.6
Compensating control
Do not mount malicious disk images, as mounting a malicious disk image may cause unexpected system termination.

Event History

Sep 14, 2026

CVE Published

via MITRE·08:51 PM

Data Sourced

via MITRE·08:51 PM

DescriptionWeakness

Frequently Asked Questions

What action triggers the issue?

The issue may be triggered when a malicious disk image is mounted.

What impact is described if exploitation succeeds?

Mounting a malicious disk image may cause unexpected system termination.

Which macOS releases include the fix?

The issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, and macOS Tahoe 26.6.