VULNERABILITY INTELLIGENCE

CVE-2019-6293

CVSS score5.5 MEDIUM
EPSS probability1.60%
CISA KEVNot currently listed
Published2019-01-15
Last modified2026-06-17
CVSS vectorCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Description

An issue was discovered in the function mark_beginning_as_normal in nfa.c in flex 2.6.4. There is a stack exhaustion problem caused by the mark_beginning_as_normal function making recursive calls to itself in certain scenarios involving lots of '*' characters. Remote attackers could leverage this vulnerability to cause a denial-of-service.

Weakness classification

  • CWE-674: Uncontrolled Recursion

Primary references