CVE-2018-5383: Apple iPhone OS

Medium severity, CVSS 6.8. EPSS: 0.8% chance of exploitation in the next 30 days.

Bluetooth firmware or operating system software drivers in macOS versions before 10.13, High Sierra and iOS versions before 11.4, and Android versions before the 2018-06-05 patch may not sufficiently validate elliptic curve parameters used to generate public keys during a Diffie-Hellman key exchange, which may allow a remote attacker to obtain the encryption key used by the device.

Affected products

• Apple iPhone OS: before 11.4 (fixed in 11.4)
• Apple Mac OS X: before 10.13 (fixed in 10.13)
• Google Android: version 6.0 only; version 6.0.1 only; version 7.0 only; version 7.1.1 only; version 7.1.2 only; version 8.0 only; …
• Ti WL18XX Bluetooth Service Pack: before 4.3 (fixed in 4.3)

Published 2018-08-07. Last modified 2026-06-17.