Use after free in macOS - CVE-2026-43668
Published: May 12, 2026
Vulnerability identifier: #VU131048
CSH Severity: Medium
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:Green
CVE-ID: CVE-2026-43668
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 escalate privileges on the system.
The vulnerability exists due to a use-after-free error in mDNSResponder. A remote attacker can trick the victim into opening a specially crafted file and cause unexpected system termination or corrupt kernel memory.
How to mitigate CVE-2026-43668
Install update from vendor's website.