CVE-2026-45748Public exploitNetwork attack vector

Remote command execution via unescaped tunnel fields

Published Jun 5, 2026 · Updated Jun 5, 2026

OS command injection in Termix before 2.3.2 allows remote attackers to execute commands on a source SSH host through tunnel setup. The POST /ssh/tunnel/connect handler interpolates endpointIP, endpointUsername, password, and a tunnel marker into a shell command passed to conn.exec without escaping. Exploitation requires attacker-controlled host-record values and a tunnel connection; auto-start tunnels can execute stored payloads again after Termix restarts.

CVSS severity9.8
Critical
EPSS probability1.73%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in Termix before 2.3.2 allows remote attackers to execute commands on a source SSH host through tunnel setup. The POST /ssh/tunnel/connect handler interpolates endpointIP, endpointUsername, password, and a tunnel marker into a shell command passed to conn.exec without escaping. Exploitation requires attacker-controlled host-record values and a tunnel connection; auto-start tunnels can execute stored payloads again after Termix restarts.

The record

CVE
CVE-2026-45748
Published
Jun 5, 2026
Updated
Jun 5, 2026
Vendor
Termix-SSH
Product
Termix
Classifications
CWE-78, T1059
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 5, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 5, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 2.3.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Termix-SSH · Termixversion=< 2.3.2

Published CVSS scores

9.8GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059Command and Scripting Interpreter

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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