CVE-2018-20579: Contiki-NG Project Contiki-NG

High severity, CVSS 7.1. EPSS: 0.3% chance of exploitation in the next 30 days.

Contiki-NG before 4.2 has a stack-based buffer overflow in the push function in os/lib/json/jsonparse.c that allows an out-of-bounds write of an '{' or '[' character.

Affected products

• Contiki-NG Project Contiki-NG: version 4.2 only

Published 2018-12-28. Last modified 2026-06-17.