Improper input validation in macOS - CVE-2026-64782
Published: August 18, 2026
Vulnerability identifier: #VU143970
CSH Severity: Medium
CVSS v4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-64782
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to improper input validation in WebKit when handling web content. A remote attacker can send specially crafted content to cause a denial of service.
Affected software
macOS
iPadOS
Apple iOS
Apple Safari
iPadOS
Apple iOS
Apple Safari
How to mitigate CVE-2026-64782
Install update from vendor's website.
macOS - update to 26.6.2 25G83
iPadOS - addressed in versions 18.7.10 22H374, 26.6.1 23G83
Apple iOS - addressed in versions 18.7.10 22H374, 26.6.1 23G83
Apple Safari - update to 26.6.1
iPadOS - addressed in versions 18.7.10 22H374, 26.6.1 23G83
Apple iOS - addressed in versions 18.7.10 22H374, 26.6.1 23G83
Apple Safari - update to 26.6.1