CVE-2026-60060: Teraterm Project TTSSH2

Medium severity, CVSS 5.1. EPSS: 0.3% chance of exploitation in the next 30 days.

Improper Handling of Length Parameter Inconsistency (CWE-130) vulnerability exists in TTSSH2 plugin of Tera Term provided by TeraTerm Project. When Tera Term attempts to establish an SSH connection to a server set up by an attacker, out-of-bounds read/write may occur. As a result, the contents of adjacent memory regions may be transmitted to the server, and Tera Term may behave unexpected or terminate abnormally.

Affected products

• Teraterm Project TTSSH2: from 1.00 alpha1, up to and including 3.6.1

Published 2026-07-17. Last modified 2026-07-17.