CVE-2019-15702: Riot-OS Riot

High severity, CVSS 7.5. EPSS: 1.4% chance of exploitation in the next 30 days.

In the TCP implementation (gnrc_tcp) in RIOT through 2019.07, the parser for TCP options does not terminate on all inputs, allowing a denial-of-service, because sys/net/gnrc/transport_layer/tcp/gnrc_tcp_option.c has an infinite loop for an unknown zero-length option.

Affected products

• Riot-OS Riot: up to and including 2019.07

Published 2019-08-27. Last modified 2026-06-17.