CVE-2016-4073: Apple Mac OS X

Critical severity, CVSS 9.8. EPSS: 7.1% chance of exploitation in the next 30 days.

Multiple integer overflows in the mbfl_strcut function in ext/mbstring/libmbfl/mbfl/mbfilter.c in PHP before 5.5.34, 5.6.x before 5.6.20, and 7.x before 7.0.5 allow remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted mb_strcut call.

Affected products

• Apple Mac OS X: up to and including 10.11.3
• PHP PHP: version 5.5.0 only; version 5.5.1 only; version 5.5.2 only; version 5.5.3 only; version 5.5.4 only; version 5.5.5 only; …

Published 2016-05-20. Last modified 2026-06-17.