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Vulnerabilities

CVE-2026-58317 | BDVDB-2026-349271 Detail

TeraTerm ProjectTTSSH2

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.

Impact#

Per CVSS v3.0: confidentiality impact low, integrity impact low, availability impact low. Attack vector: network.

Weaknesses#

  • CWE-196 Unsigned to signed conversion error

References#

Exploit#

No public exploit known

History#

  1. Version 1Record published in the CVE List.