CVE-2026-19983: OS Command Injection in GL.iNet A1300
CVE-2026-19983 is an OS command injection vulnerability affecting multiple GL.iNet router models including A1300, AX1800, AXT1800, MT2500, MT3000, MT6000, X3000, and XE3000 running firmware version 4.8.x. The vulnerability exists in the NAS Command Service component, specifically in the processing of the file /usr/bin/gl_nas_sys. This flaw allows remote attackers to execute arbitrary OS commands. The vendor has confirmed the existence of this vulnerability and recommends upgrading to version 4.9.0 to address the issue.
AI Analysis
Technical Summary
This vulnerability involves OS command injection in the NAS Command Service of GL.iNet routers (models A1300, AX1800, AXT1800, MT2500, MT3000, MT6000, X3000, XE3000) running firmware 4.8.x. The issue arises from unsafe handling of input in the /usr/bin/gl_nas_sys file, enabling remote attackers to inject and execute arbitrary operating system commands. The vendor has acknowledged the vulnerability and indicates that upgrading to firmware version 4.9.0 mitigates the risk.
Potential Impact
Successful exploitation of this vulnerability could allow remote attackers to execute arbitrary OS commands on affected devices without authentication, potentially leading to full system compromise or disruption of NAS services. The CVSS 4.0 base score is 6.9 (medium severity), reflecting the network attack vector, no required privileges or user interaction, and low to limited confidentiality, integrity, and availability impacts.
Mitigation Recommendations
The vendor recommends upgrading affected devices to firmware version 4.9.0, which addresses this vulnerability. Users should apply this update promptly to mitigate the risk. No other official mitigations or temporary fixes are documented. Patch status is confirmed by the vendor advisory indicating version 4.9.0 as the fixed release.
CVE-2026-19983: OS Command Injection in GL.iNet A1300
Description
CVE-2026-19983 is an OS command injection vulnerability affecting multiple GL.iNet router models including A1300, AX1800, AXT1800, MT2500, MT3000, MT6000, X3000, and XE3000 running firmware version 4.8.x. The vulnerability exists in the NAS Command Service component, specifically in the processing of the file /usr/bin/gl_nas_sys. This flaw allows remote attackers to execute arbitrary OS commands. The vendor has confirmed the existence of this vulnerability and recommends upgrading to version 4.9.0 to address the issue.
CVSS v4.0
Score 6.9medium
Affected software
cpe:2.3:a:gl.inet:a1300:*:*:*:*:*:*:*:*cpe:2.3:a:gl.inet:ax1800:*:*:*:*:*:*:*:*cpe:2.3:a:gl.inet:axt1800:*:*:*:*:*:*:*:*cpe:2.3:a:gl.inet:mt2500:*:*:*:*:*:*:*:*cpe:2.3:a:gl.inet:mt3000:*:*:*:*:*:*:*:*cpe:2.3:a:gl.inet:mt6000:*:*:*:*:*:*:*:*AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves OS command injection in the NAS Command Service of GL.iNet routers (models A1300, AX1800, AXT1800, MT2500, MT3000, MT6000, X3000, XE3000) running firmware 4.8.x. The issue arises from unsafe handling of input in the /usr/bin/gl_nas_sys file, enabling remote attackers to inject and execute arbitrary operating system commands. The vendor has acknowledged the vulnerability and indicates that upgrading to firmware version 4.9.0 mitigates the risk.
Potential Impact
Successful exploitation of this vulnerability could allow remote attackers to execute arbitrary OS commands on affected devices without authentication, potentially leading to full system compromise or disruption of NAS services. The CVSS 4.0 base score is 6.9 (medium severity), reflecting the network attack vector, no required privileges or user interaction, and low to limited confidentiality, integrity, and availability impacts.
Mitigation Recommendations
The vendor recommends upgrading affected devices to firmware version 4.9.0, which addresses this vulnerability. Users should apply this update promptly to mitigate the risk. No other official mitigations or temporary fixes are documented. Patch status is confirmed by the vendor advisory indicating version 4.9.0 as the fixed release.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-08-16T13:38:32.594Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a82948abf8831d53941b7f6
Added to database: 08/17/2026, 04:56:42 UTC
Last enriched: 08/17/2026, 05:14:58 UTC
Last updated: 08/17/2026, 05:14:58 UTC
Views: 4
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