Improper input validation in macOS - CVE-2026-84538
Published: September 15, 2026
Vulnerability identifier: #VU149792
CSH Severity: Low
CVSS v4: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-84538
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient input validation in Kernel. A remote attacker can trick the victim into opening a specially crafted file and cause a denial-of-service.
Affected software
macOS
How to mitigate CVE-2026-84538
Install update from vendor's website.
macOS - addressed in versions 26.7 25G229, 15.8 24H23