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GL.iNet MT3000 CVE-2026-11406

| EUVD-2026-34963 LOW
Command Injection (CWE-77)
2026-06-06 VulDB GHSA-6qr8-c78q-5fg9
2.1
CVSS 4.0 · NVD

Severity by source

NVD PRIMARY
2.1 LOW
CVSS: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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS: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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
X

Lifecycle Timeline

4
Severity Changed
Jun 06, 2026 - 10:22 NVD
MEDIUM LOW
CVSS changed
Jun 06, 2026 - 10:22 NVD
6.3 (MEDIUM) 2.1 (LOW)
Analysis Generated
Jun 06, 2026 - 10:21 vuln.today
CVE Published
Jun 06, 2026 - 09:15 nvd
MEDIUM 6.3

DescriptionCVE.org

A vulnerability was determined in GL.iNet MT3000 up to 4.4.5. This vulnerability affects unknown code of the file ovpnclient.sh of the component OpenVPN Client Import Workflow. This manipulation causes command injection. Remote exploitation of the attack is possible. The exploit has been publicly disclosed and may be utilized. Upgrading to version 4.9.0_beta3-1012-0513-1778656146 is able to resolve this issue. You should upgrade the affected component. The vendor confirms: "This issue has been addressed by implementing malicious checks on OpenVPN configuration files to prevent command injection attacks carried through malicious configuration files."

AnalysisAI

Command injection in GL.iNet MT3000 routers running firmware up to version 4.4.5 allows authenticated remote attackers to execute arbitrary OS commands by supplying a crafted OpenVPN configuration file through the device's OpenVPN Client Import Workflow. The shell script ovpnclient.sh processes imported .ovpn files without adequately sanitizing user-controlled content, enabling embedded shell metacharacters or directives to execute at the OS level. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Recon
Obtain or guess low-privilege MT3000 admin credentials
Delivery
Authenticate to web management interface over network
Exploit
Craft .ovpn file embedding shell injection payload
Install
Upload malicious config via OpenVPN Client Import Workflow
C2
ovpnclient.sh processes file without sanitization
Execute
Injected OS commands execute on router
Impact
Arbitrary command execution achieved on device

Vulnerability AssessmentAI

Exploitation Exploitation requires the attacker to hold at least low-level authenticated access (PR:L per CVSS vector) to the GL.iNet MT3000 web management interface - unauthenticated exploitation is not supported by the available data. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 3.1 base score of 6.3 (Medium) reflects network-reachable exploitation (AV:N), low attack complexity (AC:L), low privilege requirement (PR:L - authenticated), no user interaction (UI:N), and unchanged scope with low-level confidentiality, integrity, and availability impact. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker who has obtained low-privilege credentials for the GL.iNet MT3000 management interface - through credential stuffing, default password exploitation, or phishing - authenticates to the web UI and navigates to the OpenVPN Client Import feature. They upload a crafted .ovpn configuration file with shell injection payloads embedded in fields processed by ovpnclient.sh (for example, in the remote, dev, or cert directive values), causing arbitrary OS commands to execute on the router with the script's runtime privileges. …
Remediation The primary remediation is upgrading the GL.iNet MT3000 firmware to version 4.9.0_beta3-1012-0513-1778656146, available at https://fw.gl-inet.cn/firmware/mt3000/testing/mt3000-4.9.0_beta3-1012-0513-1778656146.tar. … Detailed patch versions, workarounds, and compensating controls in full report.

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CVE-2026-11406 vulnerability details – vuln.today

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