Skip to main content

GL-iNet GL-MT3000 CVE-2026-18616

| EUVDEUVD-2026-52414 HIGH
Command Injection (CWE-77)
2026-08-03 VulDB GHSA-39jx-5rpr-2f33
Command Injection Gl Mt3000
8.9
CVSS 4.0 · Vendor: VulDB
Share

Severity by source

Vendor (VulDB) PRIMARY
8.9 CRITICAL
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/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
vuln.today AI
9.8 CRITICAL

Network-reachable CGI endpoint, no authentication per provided CVSS 4.0 PR:N, command injection yields full device control with no scope change to other systems.

3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (VulDB).

CVSS VectorVendor: VulDB

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/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
None
User Interaction
None
Scope
X

Lifecycle Timeline

6
Analysis Updated
Aug 03, 2026 - 19:28 vuln.today
v2 (cvss_changed)
Re-analysis Queued
Aug 03, 2026 - 19:22 vuln.today
cvss_changed
Severity Changed
Aug 03, 2026 - 19:22 NVD
CRITICAL HIGH
CVSS changed
Aug 03, 2026 - 19:22 NVD
9.3 (CRITICAL) 8.9 (HIGH)
Analysis Generated
Aug 03, 2026 - 19:15 vuln.today
CVE Published
Aug 03, 2026 - 18:30 cve.org
CRITICAL 9.3

DescriptionCVE.org

A vulnerability was identified in GL-iNet GL-MT3000 up to 4.4.5. The impacted element is the function server.set_peer of the file /cgi-bin/glc of the component wg-server.so Native Plugin. The manipulation of the argument public_key leads to command injection. Remote exploitation of the attack is possible. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure and confirmed the existence of the vulnerability.

AnalysisAI

Remote command injection in GL-iNet GL-MT3000 firmware (up to version 4.4.5) allows unauthenticated network attackers to execute arbitrary OS commands on the device by supplying a malicious public_key argument to the server.set_peer function exposed via the /cgi-bin/glc CGI endpoint of the WireGuard server native plugin (wg-server.so). The vendor has confirmed the vulnerability following coordinated disclosure, and a public proof-of-concept exploit is available on GitHub, materially lowering the barrier to exploitation. …

Unlock full vulnerability intelligence

  • Risk assessment & exploitation conditions
  • Attack chain visualization
  • Remediation with exact patch versions
  • Threat intelligence from 22 sources
  • Personal watchlist & email alerts
Continue with Google Continue with GitHub

Free forever · No credit card required

Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Identify GL-MT3000 with WireGuard server enabled
Delivery
Send crafted HTTP request to /cgi-bin/glc
Exploit
Inject shell commands via public_key argument
Execution
server.set_peer passes unsanitized input to OS
Persist
Execute arbitrary commands as root
Impact
Full device compromise
Sign in to reveal

Vulnerability AssessmentAI

Exploitation The WireGuard server plugin (wg-server.so) must be active on the device, meaning the WireGuard server mode feature must be enabled in the GL-iNet firmware configuration - this is not guaranteed to be the default state and should be verified per deployment. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 4.0 score of 8.9 reflects a network-accessible (AV:N), low-complexity (AC:L), unauthenticated (PR:N), no-user-interaction (UI:N) attack path with high confidentiality, integrity, and availability impact on the vulnerable system and no downstream scope change. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An unauthenticated remote attacker sends a crafted HTTP POST request to the /cgi-bin/glc endpoint targeting the server.set_peer function, embedding shell metacharacters (e.g., a semicolon or command substitution sequence) in the public_key parameter value. The unsanitized input is passed to an underlying system call within wg-server.so, causing the injected command to execute with the privileges of the CGI process - typically root on embedded GL-iNet firmware. …
Remediation No vendor-released patched firmware version is identified in the available data at time of analysis; the patch status should be tracked via the GL-iNet official firmware release page and VulDB advisory at https://vuldb.com/vuln/385536. … Detailed patch versions, workarounds, and compensating controls in full report.
Sign in to read full assessment

Recommended ActionAI

Within 24 hours, conduct an inventory of all GL-MT3000 devices across your network and immediately disable the WireGuard server plugin (wg-server.so) through device administration interfaces or restrict network access to these devices via firewall access control lists. …

Sign in for detailed remediation steps and compensating controls.

Threat intelligence, references, and detailed analysis are available after sign-in.

More in Gl Mt3000

View all
CVE-2026-18686 HIGH POC
8.9 Aug 04

Command injection in GL.iNet GL-MT3000 router firmware (all versions through 4.4.5) allows unauthenticated remote attack
CVE-2026-18601 HIGH POC
8.9 Aug 03

Remote command injection in GL.iNet GL-MT3000 router firmware (versions 4.4.0 through 4.4.5) allows unauthenticated netw
CVE-2026-18612 HIGH POC
8.9 Aug 03

Remote command injection in GL-iNet GL-MT3000 firmware through version 4.4.5 allows unauthenticated network attackers to
CVE-2026-18684 HIGH POC
8.9 Aug 03

Command injection in GL.iNet GL-MT3000 firmware up to version 4.4.5 exposes the device to full remote compromise through
CVE-2026-18614 HIGH POC
8.9 Aug 03

Unauthenticated remote command injection in GL-iNet GL-MT3000 firmware (versions 4.4.0 through 4.4.5) allows network-adj
CVE-2026-18685 HIGH POC
8.9 Aug 03

Command injection in GL.iNet GL-MT3000 firmware up to version 4.4.5 allows remote attackers to execute arbitrary OS comm
CVE-2026-18615 HIGH POC
8.9 Aug 03

Remote command injection in the GL-iNet GL-MT3000 travel router (firmware 4.4.0-4.4.5) allows unauthenticated network-ad
CVE-2026-18602 HIGH POC
8.9 Aug 03

Remote command injection in GL.iNet GL-MT3000 routers (firmware 4.4.0-4.4.5) allows unauthenticated network attackers to
CVE-2026-18613 HIGH POC
8.9 Aug 03

Injection vulnerability in GL-iNet GL-MT3000 (Beryl AX) firmware through version 4.4.5 exposes the plugins.set_config fu
CVE-2026-12186 HIGH POC
7.4 Jun 14

Authenticated command injection in the GL.iNet GL-MT3000 travel router (firmware up to 4.4.5) lets remote attackers with
CVE-2026-12187 HIGH POC
7.4 Jun 14

Command injection in the GL.iNet GL-MT3000 travel router's Online Firmware Upgrade Handler (/usr/bin/one_click_upgrade)

CVE-2026-18600 HIGH POC
7.4 Aug 03

Command injection in the GL.iNet GL-MT3000 router's Network Lua RPC Plugin allows authenticated remote attackers to exec

Same weakness CWE-77 – Command Injection

View all
CVE-2024-21887 CRITICAL POC
9.1
CVE-2012-1823 CRITICAL POC
9.8
CVE-2016-1555 CRITICAL POC
9.8
CVE-2024-55956 CRITICAL POC
9.8
CVE-2015-2051 HIGH POC
8.8
CVE-2017-6327 HIGH POC
8.8
CVE-2023-34960 CRITICAL POC
9.8
CVE-2023-37679 CRITICAL POC
9.8

Same technique Command Injection

View all
CVE-2024-21887 CRITICAL POC
9.1
CVE-2019-15107 CRITICAL POC
9.8
CVE-2024-51378 CRITICAL POC
9.8
CVE-2012-1823 CRITICAL POC
9.8
CVE-2016-1555 CRITICAL POC
9.8
CVE-2014-6271 CRITICAL POC
9.8
CVE-2024-55956 CRITICAL POC
9.8
CVE-2018-11138 CRITICAL POC
9.8

Share

CVE-2026-18616 vulnerability details – vuln.today
Back

This site uses cookies essential for authentication and security. No tracking or analytics cookies are used. Privacy Policy