CVE-2008-3196: Yacc

High severity, CVSS 7.8. EPSS: 1.4% chance of exploitation in the next 30 days.

skeleton.c in yacc does not properly handle reduction of a rule with an empty right hand side, which allows context-dependent attackers to cause an out-of-bounds stack access when the yacc stack pointer points to the end of the stack.

Affected products

• Yacc Yacc: any version

Published 2008-07-16. Last modified 2026-06-16.