CVE-2026-43761

Published Sep 14, 2026 CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Title Out‑of‑Bound Write in Disk Image Handling Causes System Crash
Type Values Removed Values Added
Title Out‑of‑Bound Write in Disk Image Handling Causes System Crash
Type Values Removed Values Added
Title Out‑of‑Bounds Write in Disk Image Mounting Leads to System Termination
Type Values Removed Values Added
CPEs cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title Out‑of‑Bounds Write in Disk Image Mounting Leads to System Termination
Weaknesses CWE-787
Type Values Removed Values Added
First Time appeared Apple
Apple macos
Vendors & Products Apple
Apple macos
Type Values Removed Values Added
Description 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.
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
apple
Published
Updated
Sep 15, 2026, 2:34 PM
Reserved
May 1, 2026, 10:46 PM
Status
Analyzed
Published
Sep 14, 2026, 9:17 PM
Modified
Sep 15, 2026, 7:23 PM