CVE-2026-84496

Out‑of‑Bounds Write in macOS Disk Image Handling Causes Kernel Memory Corruption

Published Oct 26, 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 Golden Gate 27.2, macOS Tahoe 26.7.2. Mounting a maliciously crafted disk image may cause unexpected system termination or corrupt kernel memory.

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
CPEs cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
Type Values Removed Values Added
Title Out‑of‑Bounds Write in macOS Disk Image Handling Causes Kernel Memory Corruption
Type Values Removed Values Added
Title Out‑of‑Bounds Write in macOS Disk Image Mounting May Cause Kernel Corruption
Weaknesses CWE-120
Type Values Removed Values Added
Title Out‑of‑Bounds Write in macOS Disk Image Mounting May Cause Kernel Corruption
First Time appeared Apple
Apple macos
Weaknesses CWE-120
CWE-787
Vendors & Products Apple
Apple macos
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
Description An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in macOS Golden Gate 27.2, macOS Tahoe 26.7.2. Mounting a maliciously crafted disk image may cause unexpected system termination or corrupt kernel memory.
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
apple
Published
Updated
Oct 27, 2026, 12:10 AM
Reserved
Sep 1, 2026, 8:50 PM
Status
Analyzed
Published
Oct 26, 2026, 9:19 PM
Modified
Oct 28, 2026, 3:39 PM