State issues in macOS - CVE-2026-84635
Published: September 15, 2026
Vulnerability identifier: #VU149910
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-2026-84635
CWE-ID: CWE-371
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 a state management issue in WebKit. A remote attacker can trick the victim into opening a specially crafted file and perform an unexpected process termination.
Affected software
macOS
Apple iOS
iPadOS
Apple Safari
Apple iOS
iPadOS
Apple Safari
How to mitigate CVE-2026-84635
Install update from vendor's website.
macOS - update to 27.0 26A428
Apple Safari - update to 27.0
Apple iOS - addressed in versions 27.0 24A427, 27.0 24A437
iPadOS - update to 27.0 24A437
Apple Safari - update to 27.0
Apple iOS - addressed in versions 27.0 24A427, 27.0 24A437
iPadOS - update to 27.0 24A437