VULNERABILITY INTELLIGENCE

CVE-2016-3191

CVSS score9.8 CRITICAL

EPSS probability8.43%

CISA KEVNot currently listed

Published2016-03-17

Last modified2026-06-17

Description

The compile_branch function in pcre_compile.c in PCRE 8.x before 8.39 and pcre2_compile.c in PCRE2 before 10.22 mishandles patterns containing an (*ACCEPT) substring in conjunction with nested parentheses, which allows remote attackers to execute arbitrary code or cause a denial of service (stack-based buffer overflow) via a crafted regular expression, as demonstrated by a JavaScript RegExp object encountered by Konqueror, aka ZDI-CAN-3542.