TI-2026-15312 Aliases CVE-2026-18686 GHSA-7892-84cj-c35c

GL.iNet GL-MT3000 nas-web RPC Wrapper glc nas-web.add_user command injection

HIGH 81CWE-74Published 2026-08-04 · Updated 2026-08-04

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 vulnerability was detected in GL.iNet GL-MT3000 up to 4.4.5. The affected element is the function nas-web.add_user of the file /cgi-bin/glc of the component nas-web RPC Wrapper. Performing a manipulation results in command injection. The attack can be initiated remotely. The exploit is now public 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 0.04731 91st 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

Vendor	Product	Affected versions	Fixed in	Status	Source
GL.iNet	GL-MT3000	4.4.0; 4.4.1; 4.4.2; 4.4.3; 4.4.4; 4.4.5	—	No fix listed	CNA

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

CPE	Versions	Role	Vendor
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

2026-10-02 Threatist record created from CVE-2026-18686
2026-10-03 Alias added: GHSA-7892-84cj-c35c

References

Exploit 1

https://github.com/coconut652-7/IOT_Vul_Public/tree/main/Glinet/MT3000/nas-web/ADD_USER_ADD_SHARE

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-2026-15311 GL.iNet GL-MT3000 modem.so glc set_upgrade 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