Out-of-bounds write in macOS - CVE-2026-112456
Published: October 27, 2026
Vulnerability identifier: #VU157847
CSH Severity: Low
CVSS v4: 8.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-112456
CWE-ID: CWE-787
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to corrupt memory, potentially causing a denial of service or arbitrary code execution.
The vulnerability exists due to an out-of-bounds write in the HFS component of Apple macOS when processing input. A remote attacker can supply specially crafted input to trigger a write outside the bounds of a memory buffer, potentially causing a denial of service or arbitrary code execution.
Affected software
macOS
Apple iOS
iPadOS
Apple iOS
iPadOS
How to mitigate CVE-2026-112456
Install update from vendor's website.
macOS - addressed in versions 27.2 26B123, 15.8.2 24H232, 26.7.2 25G332
Apple iOS - addressed in versions 26.7.2, 27.2 24B119, 27.2 24B120, 27.2 24B91020
iPadOS - addressed in versions 26.7.2, 27.2 24B119
Apple iOS - addressed in versions 26.7.2, 27.2 24B119, 27.2 24B120, 27.2 24B91020
iPadOS - addressed in versions 26.7.2, 27.2 24B119