CVE-2026-58317
6.3
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| TeraTerm Project | TTSSH2 | 1.00 alpha1 <= 3.6.1 | affected |
Weaknesses
- CWE-196: Unsigned to signed conversion error
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: partial
References
- https://teratermproject.github.io/SA/JVN65294474-en.html
- https://teratermproject.github.io/SA/JVN65294474.html
- https://jvn.jp/en/jp/JVN65294474/
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