CVE-2026-42454Public exploitNetwork attack vector

Authenticated remote code execution via container ID injection

Published May 8, 2026 · Updated May 8, 2026

OS command injection in Termix before 2.1.0 allows remote authenticated users to execute arbitrary commands on managed servers. The Docker REST endpoints and console WebSocket handlers interpolate an unvalidated containerId into shell strings passed through executeDockerCommand() to ssh2.Client.exec(). An authenticated Termix session and an SSH-connected host with Docker management enabled are required; commands run with the configured SSH account's privileges.

CVSS severity9.9
Critical
EPSS probability0.65%
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 2.1.0 allows remote authenticated users to execute arbitrary commands on managed servers. The Docker REST endpoints and console WebSocket handlers interpolate an unvalidated containerId into shell strings passed through executeDockerCommand() to ssh2.Client.exec(). An authenticated Termix session and an SSH-connected host with Docker management enabled are required; commands run with the configured SSH account's privileges.

The record

CVE
CVE-2026-42454
Published
May 8, 2026
Updated
May 8, 2026
Vendor
Termix-SSH
Product
Termix
Classifications
CWE-78, T1059.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 8, 2026CVE publishedPublication date reported by the CVE source.
  2. May 8, 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=< 2.1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Termix-SSH · Termixversion=< 2.1.0

Published CVSS scores

9.9GitHubCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059.004Unix Shell

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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