CVE-2026-58317
Medium · 6.3CVSS
6.3
EPSS
0.3%
Published
Jul 17, 2026
CISA due date
—
The record
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 packages
| Ecosystem | Package | Introduced | Fixed |
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Related vulnerabilities
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- CVE-2026-14454 Imager versions before 1.033 for Perl treat unsigned EXIF IFD entry counts as signed. CWE-196
- CVE-2026-34155 RAUC controls the update process on embedded Linux systems. CWE-196