GL.iNet XE3000 NAS Command Service gl_nas_sys os command injection

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-19983
StatePUBLISHED
AssignerVulDB
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-17 05:17:09 UTC
Updated2026-08-20 12:48:10 UTC
DescriptionA 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."

Risk And Classification

Primary CVSS: v4.0 6.9 MEDIUM from [email protected]

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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS: 0.013080000 probability, percentile 0.683630000 (date 2026-08-20)

Problem Types: CWE-77 | CWE-78 | CWE-78 OS Command Injection | CWE-77 Command Injection

VersionSourceTypeScoreSeverityVector
4.0[email protected]Secondary6.9MEDIUMCVSS: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/C...
4.0CNADECLARED6.9MEDIUMCVSS: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
3.1[email protected]Secondary8.3HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L
3.1CNADECLARED8.3HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L/E:X/RL:O/RC:C
3.0CNADECLARED8.3HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L/E:X/RL:O/RC:C
2.0[email protected]Secondary7.5AV:N/AC:L/Au:N/C:P/I:P/A:P
2.0CNADECLARED7.5AV:N/AC:L/Au:N/C:P/I:P/A:P/E:ND/RL:OF/RC:C

CVSS v4.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
None
User Interaction
None
Confidentiality
Low
Integrity
Low
Availability
Low
Sub Conf.
Low
Sub Integrity
Low
Sub Availability
Low

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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
Low

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L

CVSS v3.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
Low

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L/E:X/RL:O/RC:C

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA GL.iNet A1300 affected 4.8.* Not specified
CNA GL.iNet A1300 unaffected 4.9.0 Not specified
CNA GL.iNet AX1800 affected 4.8.* Not specified
CNA GL.iNet AX1800 unaffected 4.9.0 Not specified
CNA GL.iNet AXT1800 affected 4.8.* Not specified
CNA GL.iNet AXT1800 unaffected 4.9.0 Not specified
CNA GL.iNet MT2500 affected 4.8.* Not specified
CNA GL.iNet MT2500 unaffected 4.9.0 Not specified
CNA GL.iNet MT3000 affected 4.8.* Not specified
CNA GL.iNet MT3000 unaffected 4.9.0 Not specified
CNA GL.iNet MT6000 affected 4.8.* Not specified
CNA GL.iNet MT6000 unaffected 4.9.0 Not specified
CNA GL.iNet X3000 affected 4.8.* Not specified
CNA GL.iNet X3000 unaffected 4.9.0 Not specified
CNA GL.iNet XE3000 affected 4.8.* Not specified
CNA GL.iNet XE3000 unaffected 4.9.0 Not specified

References

ReferenceSourceLinkTags
vuldb.com/vuln/391165 [email protected] vuldb.com
vuldb.com/cve/CVE-2026-19983 [email protected] vuldb.com
vuldb.com/vuln/391165/cti [email protected] vuldb.com
vuldb.com/submit/873919 [email protected] vuldb.com
github.com/gl-inet/CVE-issues/blob/main/4.0.0/NAS%20Host-header%20bypass... [email protected] github.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: GLiNet (VulDB User) (en)

CNA: VulDB CNA Team (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-08-16T00:00:00.000ZAdvisory disclosed
CNA2026-08-16T02:00:00.000ZVulDB entry created
CNA2026-08-16T15:43:55.000ZVulDB entry last update

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