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TI-2026-15311 Aliases CVE-2026-18685GHSA-frjc-j2mw-rv29

GL.iNet GL-MT3000 modem.so glc set_upgrade command injection

Priority HIGH 81CWE-74Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-77.

Summary

A security vulnerability has been detected in GL.iNet GL-MT3000 up to 4.4.5. Impacted is the function set_upgrade of the file /cgi-bin/glc of the component modem.so. Such manipulation leads to command injection. It is possible to launch the attack remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure and confirmed the existence of the vulnerability.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.03616 89th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
GL.iNetGL-MT30004.4.0; 4.4.1; 4.4.2; 4.4.3; 4.4.4; 4.4.5—No fix listedCNA
  • GL-MT3000 VendorGL.iNet Affected 4.4.0; 4.4.1; 4.4.2; 4.4.3; 4.4.4; 4.4.5 Fixed in — No fix listed CNA

CPE names CNA · 1

CPEVersionsRoleVendor
cpe:2.3:o:gl-inet:gl-mt3000_firmware:*:*:*:*:*:*:*:*——GL.iNet
  • cpe:2.3:o:gl-inet:gl-mt3000_firmware:*:*:*:*:*:*:*:* Versions — — ·GL.iNet

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-18685
  2. 2026-10-03 Alias added: GHSA-frjc-j2mw-rv29

References

Exploit 1

  • TI-2026-21387 GL-iNet GL-AR300M16 v4.3.11 was discovered to contain a command injection vulnerability… CVSS 3.1CRITICAL 9.8
  • TI-2024-26219 GL-iNet products AR750/AR750S/AR300M/AR300M16/MT300N-V2/B1300/MT1300/SFT1200/X750… CVSS 3.1CRITICAL 9.8
  • TI-2023-27815 An issue was discovered on GL.iNet devices before version 4.5.0. CVSS 3.1CRITICAL 9.8
  • TI-2023-15082 An issue was discovered on GL.iNet devices before 3.216. CVSS 3.1CRITICAL 9.8
  • TI-2023-14015 GL.iNET MT3000 4.1.0 Release 2 is vulnerable to OS Command Injection via /usr/lib/oui-httpd/rpc/logread. CVSS 3.1CRITICAL 9.8
  • TI-2026-15312 GL.iNet GL-MT3000 nas-web RPC Wrapper glc nas-web.add_user command injection CVSS 4.0CRITICAL 9.3
See all 92 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences