# CVE-2026-11451: GL.iNet GL-MT3000 command injection in FTP Protocol Handler

Source: https://junglewise.ai/threats/cve-2026-11451-gl-inet-gl-mt3000-command-injection-in-ftp-protocol-handler  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-06-07. Updated: 2026-06-07  
License: CC BY 4.0 with a link back

CVE-2026-11451 · Severity: high · CVSS 7.3 · Published 2026-06-07

A security vulnerability has been identified in the GL.iNet GL-MT3000 router, a device used for providing wireless networking and VPN services. An attacker could remotely execute unauthorized commands on the router by manipulating FTP configuration settings. This could lead to a complete takeover of the device, allowing the attacker to intercept network traffic or disrupt internet connectivity. Users are advised to upgrade to firmware version 4.8.1 to resolve this issue.

Technologies: [GL.iNet GL-MT3000](https://junglewise.ai/threats/technologies/gl-mt3000). Vendors: [GL.iNet](https://junglewise.ai/threats/vendors/gl-inet).

## Quick answers

**Is CVE-2026-11451 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-11451 being exploited in the wild.

**How severe is CVE-2026-11451?** High severity, with a CVSS score of 7.3, published 7 June 2026.

**Which products and versions are affected?** GL.iNet GL-MT3000 4.4.5.

**Is there a fix for CVE-2026-11451?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-11451 attacked?** It is attacked over the network, in device firmware.

**Am I affected by CVE-2026-11451?** Check whether you run GL.iNet GL-MT3000 at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A command injection vulnerability exists in the GL.iNet GL-MT3000 firmware version 4.4.5 within the FTP Protocol Handler component. The flaw is located in the /cgi-bin/glc file, specifically involving the improper use of snprintf when handling the media_dir argument. An attacker can exploit this by injecting shell metacharacters (such as semicolons and single quotes) into the media_dir parameter, which is subsequently processed by the system without adequate sanitization. This allows for remote, unauthenticated command execution. The vendor has addressed this in version 4.8.1 by implementing the escape_single_quote() function to neutralize malicious payloads before they are written to the FTP configuration.

## Affected products

- GL.iNet GL-MT3000 4.4.5

## Timeline

- 2026-06-07: advisory: NVD published the CVE record
- 2026-06-07: disclosed: Vulnerability details released by VulDB

## References

- [https://github.com/StrTzz123/iot_vul/blob/main/GL-iNet/MT3000/4.4.5/nas_proto_media_dir_glc_rce/Readme.md](https://github.com/StrTzz123/iot_vul/blob/main/GL-iNet/MT3000/4.4.5/nas_proto_media_dir_glc_rce/Readme.md)
- [https://vuldb.com/cve/CVE-2026-11451](https://vuldb.com/cve/CVE-2026-11451)
- [https://vuldb.com/submit/825563](https://vuldb.com/submit/825563)
- [https://vuldb.com/vuln/369071](https://vuldb.com/vuln/369071)
- [https://vuldb.com/vuln/369071/cti](https://vuldb.com/vuln/369071/cti)

## Related threats

- [GL-iNet GL-MT3000 command injection in wg-server](https://junglewise.ai/threats/cve-2026-18616-gl-inet-gl-mt3000-command-injection-in-wg-server)
- [GL-iNet GL-MT3000 command injection in wg-server](https://junglewise.ai/threats/cve-2026-18615-gl-inet-gl-mt3000-command-injection-in-wg-server)
- [GL-iNet GL-MT3000 command injection in s2s.so](https://junglewise.ai/threats/cve-2026-18614-gl-inet-gl-mt3000-command-injection-in-s2s-so)
- [GL.iNet GL-MT3000 command injection in Online Firmware Upgrade Handler](https://junglewise.ai/threats/cve-2026-12187-gl-inet-gl-mt3000-command-injection-in-online-firmware-upgrade)
- [GL.iNet GL-MT3000 command injection in Tor Proxy Service Configuration Handler](https://junglewise.ai/threats/cve-2026-12186-gl-inet-gl-mt3000-command-injection-in-tor-proxy-service)