Use after free in macOS - CVE-2026-43746
Published: July 8, 2026
Vulnerability identifier: #VU137116
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-2026-43746
CWE-ID: CWE-416
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 use-after-free error in WebRTC. A remote attacker can trick the victim into opening a specially crafted file and perform an unexpected Safari crash.
Affected software
macOS
iPadOS
Apple iOS
Apple Safari
iPadOS
Apple iOS
Apple Safari
How to mitigate CVE-2026-43746
Install update from vendor's website.
macOS - update to 26.5.2 25F84
Apple Safari - update to 26.5.2
iPadOS - update to 26.5.2 23F84
Apple iOS - update to 26.5.2 23F84
Apple Safari - update to 26.5.2
iPadOS - update to 26.5.2 23F84
Apple iOS - update to 26.5.2 23F84