CVE-2014-8146: Apple iPhone OS

High severity, CVSS 7.5. EPSS: 24.7% chance of exploitation in the next 30 days.

The resolveImplicitLevels function in common/ubidi.c in the Unicode Bidirectional Algorithm implementation in ICU4C in International Components for Unicode (ICU) before 55.1 does not properly track directionally isolated pieces of text, which allows remote attackers to cause a denial of service (heap-based buffer overflow) or possibly execute arbitrary code via crafted text.

Affected products

• Apple iPhone OS: up to and including 8.2
• Apple iTunes: up to and including 12.1.3
• Apple Mac OS X: up to and including 10.10.4
• Apple watchOS: up to and including 1.0.1
• Icu-Project International Components For Unicode: before 55.1 (fixed in 55.1)

Published 2015-05-25. Last modified 2026-06-17.