Out-of-bounds write in macOS - CVE-2026-20616
Published: February 11, 2026 / Updated: March 14, 2026
Vulnerability identifier: #VU122688
CSH Severity: High
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-2026-20616
CWE-ID: CWE-787
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a boundary error in libusd_ms when parsing Alembic files. A remote attacker can create a specially crafted file, trick the victim into opening it using the affected software, trigger an out-of-bounds write and execute arbitrary code on the target system.
Affected software
macOS
visionOS
iPadOS
Apple iOS
visionOS
iPadOS
Apple iOS
How to mitigate CVE-2026-20616
Install update from vendor's website.
macOS - addressed in versions 26.3 25D125, 14.8.4 23J319
visionOS - update to 26.3
iPadOS - update to 18.7.5 22H311
Apple iOS - update to 18.7.5 22H311
visionOS - update to 26.3
iPadOS - update to 18.7.5 22H311
Apple iOS - update to 18.7.5 22H311