CVE-2026-19983CWE-77CWE-78command-injection

CVE-2026-19983

High · published August 17, 2026

CVSS v3.1
8.3
EPSS
2%
Percentile
81.2
In the wild
Unconfirmed
What it is

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."

The record
Technical detail
CVSS v3.1
8.3 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L
CVSS v4.0
6.9 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:X
EPSS
0.02060 · 81.2th percentile
Weaknesses
CWE-77 · Improper Neutralization of Special Elements used in a Command ('Command Injection'); CWE-78 · Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Published
2026-08-17T09:17Z
References (5)
https://github.com/gl-inet/CVE-issues/blob/main/4.0.0/NAS%20Host-header%20bypass%20to%20unauthenticated%20root%20RCE.md · [email protected]https://vuldb.com/cve/CVE-2026-19983 · [email protected]https://vuldb.com/submit/873919 · [email protected]https://vuldb.com/vuln/391165 · [email protected]https://vuldb.com/vuln/391165/cti · [email protected]
EPSS history
Timeline
  • 17 AUG 04:30Z
    GL.iNet XE3000 NAS Command Service gl_nas_sys os command injection
    cvelistv5