CVE-2020-13988: Contiki-NG

High severity, CVSS 7.5. EPSS: 4% chance of exploitation in the next 30 days.

An issue was discovered in Contiki through 3.0. An Integer Overflow exists in the uIP TCP/IP Stack component when parsing TCP MSS options of IPv4 network packets in uip_process in net/ipv4/uip.c.

Affected products

• Contiki-NG Contiki-NG: up to and including 3.0

Published 2020-12-11. Last modified 2026-06-17.