CVE-2020-17442: Altran Picotcp

High severity, CVSS 7.5. EPSS: 3.1% chance of exploitation in the next 30 days.

An issue was discovered in picoTCP 1.7.0. The code for parsing the hop-by-hop IPv6 extension headers does not validate the bounds of the extension header length value, which may result in Integer Wraparound. Therefore, a crafted extension header length value may cause Denial-of-Service because it affects the loop in which the extension headers are parsed in pico_ipv6_process_hopbyhop() in pico_ipv6.c.

Affected products

• Altran Picotcp: up to and including 1.7.0

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