CVE-2026-58317
- State
- Published
- Severity
- 5.1 Medium
- Published
- Jul 17, 2026
- Updated
- Jul 17, 2026
- Reserved
- Jul 10, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.1 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N | jpcert |
| 3.0 | 6.3 Medium | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L | jpcert |
Weaknesses
- CWE-196 Unsigned to signed conversion error
Affected Products
| Product | Versions |
|---|---|
TTSSH2TeraTerm Project |
|
References
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