CVE-2013-7422: Apple Mac OS X

High severity, CVSS 7.5. EPSS: 3% chance of exploitation in the next 30 days.

Integer underflow in regcomp.c in Perl before 5.20, as used in Apple OS X before 10.10.5 and other products, allows context-dependent attackers to execute arbitrary code or cause a denial of service (application crash) via a long digit string associated with an invalid backreference within a regular expression.

Affected products

  • Apple Mac OS X: up to and including 10.10.4
  • Perl Perl: version 5.18.4 only

Published 2015-08-16. Last modified 2026-06-17.