CVE-2021-1837: Apple iPadOS

Medium severity, CVSS 5.3. EPSS: 0.5% chance of exploitation in the next 30 days.

A certificate validation issue was addressed. This issue is fixed in iOS 14.5 and iPadOS 14.5. An attacker in a privileged network position may be able to alter network traffic.

Affected products

• Apple iPadOS: before 14.5 (fixed in 14.5)
• Apple iPhone OS: before 14.5 (fixed in 14.5)

Published 2021-09-08. Last modified 2026-06-17.