Use-after-free in macOS - CVE-2026-43731
Published: July 8, 2026
Vulnerability identifier: #VU137095
CSH Severity: High
CVSS v4.0: 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/E:U/U:Amber
CVE-ID: CVE-2026-43731
CWE-ID: CWE-416
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Apple Inc.
Affected software:
macOS
macOS
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary code.
The vulnerability exists due to use-after-free in WebKit when rendering web content. A remote attacker can trick the victim into opening a crafted webpage to execute arbitrary code.
How to mitigate CVE-2026-43731
Install update from vendor's website.