Memory corruption in macOS - CVE-2026-43653
Published: May 12, 2026
Vulnerability identifier: #VU131046
CSH Severity: Medium
CVSS v4: 7.1 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-43653
CWE-ID: CWE-119
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker on the local network to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary error in mDNSResponder. A remote attacker on the local network can cause a denial-of-service.
Affected software
macOS
Apple iOS
iPadOS
tvOS
Apple iOS
iPadOS
tvOS
How to mitigate CVE-2026-43653
Install update from vendor's website.
macOS - addressed in versions 26.5 25F71, 14.8.7 23J520
Apple iOS - addressed in versions 18.7.9 22H355, 26.5 23F77
iPadOS - addressed in versions 18.7.9 22H355, 26.5 23F77
tvOS - update to 26.5 23L471
Apple iOS - addressed in versions 18.7.9 22H355, 26.5 23F77
iPadOS - addressed in versions 18.7.9 22H355, 26.5 23F77
tvOS - update to 26.5 23L471