CVE-2026-58317
TTSSH2 plugin of Tera Term provided by TeraTerm Project contains multiple vulnerabilities.
CSIRTS triage
- What
- The TTSSH2 plugin of Tera Term contains multiple vulnerabilities.
- Who is affected
- Users of Tera Term with the TTSSH2 plugin are affected.
- Urgency
- Remediation is urgent as vulnerabilities could allow privilege escalation, though exploitation is not confirmed.
- Action
- Update the TTSSH2 plugin of Tera Term to the latest version.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.18% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 8% of all EPSS-scored CVEs.
Advisory coverage (2)
- mediumCVE-2026-58317: Unsigned to Signed Conversion Error (CWE-196) vulnerability exists in TTSSH2 plugin of Tera Te…nvd · 2026-07-17
- unknownMultiple vulnerabilities in TTSSH2 plugin of Tera Termjvn · 2026-07-16
External references
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[](https://www.csirts.com/cve/CVE-2026-58317)