CVE-2020-11897: Treck Tcp/ip

Critical severity, CVSS 10.0. EPSS: 9.1% chance of exploitation in the next 30 days.

The Treck TCP/IP stack before 5.0.1.35 has an Out-of-Bounds Write via multiple malformed IPv6 packets.

Affected products

• Treck Tcp/ip: before 5.0.1.35 (fixed in 5.0.1.35)

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