Critical (9.6) in apple. EPSS 0.7% chance of exploitation in the next 30 days.
A custom URL scheme handling issue was addressed with improved input validation. This issue is fixed in iOS 18.1 and iPadOS 18.1. A remote attacker may be able to break out of Web Content sandbox.
Severity
CVSS 3.1
9.6 critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
EPSS
0.7% chance of exploitation in the next 30 days; higher than 54% of CVEs (scores of 2026-10-31)