Main Vulnerability Database Vulnerabilities #VU149901

Improper input validation in macOS - CVE-2026-84551

Published: September 15, 2026

Vulnerability identifier: #VU149901

CSH Severity: Low

CVSS v4: 0 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-84551

CWE-ID: CWE-20

Exploitation vector: Local access

Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local application to bypass implemneted security restrictions.

The vulnerability exists due to insufficient input validation in Sandbox. A local application can bypass network restrictions.

macOS
Apple iOS
iPadOS

Install update from vendor's website.

macOS - update to 27.0 26A428
Apple iOS - addressed in versions 27.0 24A427, 27.0 24A437
iPadOS - update to 27.0 24A437