CVE-2026-11406Public exploitNetwork attack vector

Root command execution via unfiltered OpenVPN directives

Published Jun 6, 2026 · Updated Jun 6, 2026

Command injection in GL.iNet MT3000 firmware 4.4.0 through 4.4.5 allows remote authenticated users to execute commands as root. The ovpnclient.sh script removes only four directives from an uploaded OpenVPN profile, then starts OpenVPN as root with script-security 3. Administrative credentials and starting the imported VPN profile are required; injected script directives run with full router privileges.

CVSS severity6.3
Medium
EPSS probability1.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in GL.iNet MT3000 firmware 4.4.0 through 4.4.5 allows remote authenticated users to execute commands as root. The ovpnclient.sh script removes only four directives from an uploaded OpenVPN profile, then starts OpenVPN as root with script-security 3. Administrative credentials and starting the imported VPN profile are required; injected script directives run with full router privileges.

The record

CVE
CVE-2026-11406
Published
Jun 6, 2026
Updated
Jun 6, 2026
Vendor
GL.iNet
Product
MT3000
Classifications
CWE-77, CWE-74, T1059.004
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jun 6, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 6, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=4.4.0
  2. Affected versionversion=4.4.1
  3. Affected versionversion=4.4.2
  4. Affected versionversion=4.4.3
  5. Affected versionversion=4.4.4
  6. Affected versionversion=4.4.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

GL.iNet · MT3000version=4.4.0; version=4.4.1; version=4.4.2; version=4.4.3; version=4.4.4; version=4.4.5

Published CVSS scores

6.5VulDBAV:N/AC:L/Au:S/C:P/I:P/A:P
2.1VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
6.3VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
T1059.004Command and Scripting Interpreter: Unix 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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