CVE-2026-58317 – Tera Term TTSSH2 Plugin Unsigned to Signed Conversion Error

CVE ID :CVE-2026-58317

Published : July 17, 2026, 5:16 a.m. | 19 minutes ago

Description :Unsigned to Signed Conversion Error (CWE-196) 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.

Severity: 6.3 | MEDIUM

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