CVE-2007-4768: Pcre

Medium severity, CVSS 6.8. EPSS: 4.1% chance of exploitation in the next 30 days.

Heap-based buffer overflow in Perl-Compatible Regular Expression (PCRE) library before 7.3 allows context-dependent attackers to execute arbitrary code via a singleton Unicode sequence in a character class in a regex pattern, which is incorrectly optimized.

Affected products

• Pcre Pcre: up to and including 6.0; up to and including 6.1; up to and including 7.3

Published 2007-11-07. Last modified 2026-06-16.