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CVE-2017-2193: Untrusted search path vulnerability in the installer of Tera Term 4.94 and earlier allows an attacker to gain

48
This month
HIGH 7.8UPGRADE

CVE-2017-2193 is a high-severity flaw (CVSS 7.8) affecting tera term. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Untrusted search path vulnerability in the installer of Tera Term 4.94 and earlier allows an attacker to gain privileges via a Trojan horse DLL in an unspecified directory.

Why this priority

  • High severity

A fixed release or distro patch exists.

Risk facts

CVSS score7.8 (High)
Attack vectorLocal
Attack complexityLow
Privileges neededNone
User interactionRequired
EPSS exploit chance2.0% (top 19%)
CISA exploited listNo
WeaknessCWE-426
Published2017-06-09
Last modified2026-06-17
Publisher (CNA): JPCERT/CC · Vendor: tera term project

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Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

tera term project tera term UPGRADE
Affected: <= 4.94
Fixed in: newer than 4.94
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy tera-term || rpm -q tera-term || tera-term --version
2. UPGRADE to newer than 4.94 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade tera-term
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade tera-term
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2017-2193?

tera term: upgrade to newer than 4.94. Exact commands for each OS are on this page.

Is CVE-2017-2193 being exploited?

CVE-2017-2193 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2017-2193 affect?

CVE-2017-2193 affects tera term. Severity is high (CVSS 7.8). Untrusted search path vulnerability in the installer of Tera Term 4.94 and earlier allows an attacker to gain privileges via a Trojan horse DLL in an unspecified directory.

How urgent is CVE-2017-2193?

Priority 48/100. High severity

References

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