Out-of-bounds write in macOS - CVE-2026-112621
Published: October 27, 2026
Vulnerability identifier: #VU157891
CSH Severity: High
CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-112621
CWE-ID: CWE-787
Exploitation vector: Remote 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 LinkPresentation component of Apple macOS when processing input. A remote attacker can supply crafted input to cause writes outside the intended memory boundaries, potentially causing a denial of service or arbitrary code execution.
Affected software
macOS
iPadOS
Apple iOS
Apple Safari
iPadOS
Apple iOS
Apple Safari
How to mitigate CVE-2026-112621
Install update from vendor's website.
macOS - update to 27.2 26B123
Apple Safari - update to 27.2
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
Apple Safari - update to 27.2
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