CVE-2026-84531: Apple iPadOS

Medium severity, CVSS 6.2. EPSS: 0.1% chance of exploitation in the next 30 days.

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 27 and iPadOS 27, macOS Golden Gate 27. Processing maliciously crafted NTLM input may lead to unexpected app termination.

Affected products

• Apple iPadOS: before 27.0 (fixed in 27.0)
• Apple iPhone OS: before 27.0 (fixed in 27.0)
• Apple macOS: before 27.0 (fixed in 27.0)

Published 2026-09-14. Last modified 2026-09-18.