CVE-2026-19983: Gl.inet a1300

High severity, CVSS 8.3. EPSS: 2.1% chance of exploitation in the next 30 days.

A vulnerability was detected in GL.iNet A1300, AX1800, AXT1800, MT2500, MT3000, MT6000, X3000 and XE3000 4.8.x. This issue affects some unknown processing of the file /usr/bin/gl_nas_sys of the component NAS Command Service. The manipulation results in os command injection. The attack may be launched remotely. Upgrading to version 4.9.0 is capable of addressing this issue. It is suggested to upgrade the affected component. The vendor explains: "After our investigation, we have confirmed that the vulnerability described (...) does indeed exist."

Affected products

• Gl.inet a1300: from 4.8, before 4.9 (fixed in 4.9)
• Gl.inet AX1800: from 4.8, before 4.9 (fixed in 4.9)
• Gl.inet AXT1800: from 4.8, before 4.9 (fixed in 4.9)
• Gl.inet MT2500: from 4.8, before 4.9 (fixed in 4.9)
• Gl.inet MT3000: from 4.8, before 4.9 (fixed in 4.9)
• Gl.inet MT6000: from 4.8, before 4.9 (fixed in 4.9)
• Gl.inet x3000: from 4.8, before 4.9 (fixed in 4.9)
• Gl.inet XE3000: from 4.8, before 4.9 (fixed in 4.9)

Published 2026-08-17. Last modified 2026-08-20.