Memory corruption in macOS - CVE-2026-86973
Published: October 27, 2026
Vulnerability identifier: #VU157988
CSH Severity: Low
CVSS v4: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-86973
CWE-ID: CWE-119
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 boundary error in WebRTC. A remote attacker can trick the victim into opening a specially crafted file and perform an unexpected process crash.
Affected software
macOS
iPadOS
Apple iOS
Apple Safari
iPadOS
Apple iOS
Apple Safari
How to mitigate CVE-2026-86973
Install update from vendor's website.
macOS - update to 27.2 26B123
Apple Safari - update to 27.2
iPadOS - addressed in versions 26.7.2, 27.2 24B119
Apple iOS - addressed in versions 26.7.2, 27.2 24B119, 27.2 24B120, 27.2 24B91020
Apple Safari - update to 27.2
iPadOS - addressed in versions 26.7.2, 27.2 24B119
Apple iOS - addressed in versions 26.7.2, 27.2 24B119, 27.2 24B120, 27.2 24B91020