High severity · published Aug 17, 2026
CVE-2026-19983
GL.iNet XE3000 NAS Command Service gl_nas_sys os command injection
8.3
CVSS
2.1%
EPSS
No
On KEV
Description
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."
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
Low
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)2.1% · higher than 81% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
A1
A1300 · GL.iNet
4.8.* · source: vendor
AX
AX1800 · GL.iNet
4.8.* · source: vendor
AX
AXT1800 · GL.iNet
4.8.* · source: vendor
MT
MT2500 · GL.iNet
4.8.* · source: vendor
MT
MT3000 · GL.iNet
4.8.* · source: vendor
MT
MT6000 · GL.iNet
4.8.* · source: vendor
X3
X3000 · GL.iNet
4.8.* · source: vendor
XE
XE3000 · GL.iNet
4.8.* · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-19983
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-19983
github.com
https://github.com/gl-inet/CVE-issues/blob/main/4.0.0/NAS%20Host-header%20bypass%20to%20unauthenticated%20root%20RCE.md
vuldb.com
https://vuldb.com/cve/CVE-2026-19983
vuldb.com
https://vuldb.com/submit/873919
vuldb.com
https://vuldb.com/vuln/391165
vuldb.com
https://vuldb.com/vuln/391165/cti
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