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CVE-2026-19983— GL.iNet XE3000 NAS Command Service gl_nas_sys os command injection

Quick assessment

Affected
GL.iNet A1300
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 GL.iNet A1300、AX1800、AXT1800、MT2500、MT3000、MT6000、X3000 和 XE3000 路由器的 4.8.x 版本中发现了一个安全漏洞。该问题影响 NAS 命令服务（NAS Command Service）组件中对文件 的某些未明确处理的操作，可能导致操作系统命令注入（OS Command Injection）。攻击者可通过远程方式利用此漏洞。建议将受影响组件升级至 4.9.0 版本以修复该问题。厂商表示：“经调查，我们确认……所述的漏洞确实存在。”

CVSS 8.3 · High EPSS 1.31% · P68

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 16

VendorProduct Version RangeStatus
GL.iNet A1300 4.8.* affected
4.9.0 unaffected
GL.iNet AX1800 4.8.* affected
4.9.0 unaffected
GL.iNet AXT1800 4.8.* affected
4.9.0 unaffected
GL.iNet MT2500 4.8.* affected
4.9.0 unaffected
GL.iNet MT3000 4.8.* affected
4.9.0 unaffected
GL.iNet MT6000 4.8.* affected
4.9.0 unaffected
GL.iNet X3000 4.8.* affected
4.9.0 unaffected
GL.iNet XE3000 4.8.* affected
4.9.0 unaffected
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I. Basic Information for CVE-2026-19983

Vulnerability Information
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Vulnerability Title
GL.iNet XE3000 NAS Command Service gl_nas_sys os command injection
Source: CVE Program / CVE List V5
Vulnerability 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."
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
GL.iNet A1300 4.8.* cpe:2.3:a:gl.inet:a1300:*:*:*:*:*:*:*:*
GL.iNet AX1800 4.8.* cpe:2.3:a:gl.inet:ax1800:*:*:*:*:*:*:*:*
GL.iNet AXT1800 4.8.* cpe:2.3:a:gl.inet:axt1800:*:*:*:*:*:*:*:*
GL.iNet MT2500 4.8.* cpe:2.3:a:gl.inet:mt2500:*:*:*:*:*:*:*:*
GL.iNet MT3000 4.8.* cpe:2.3:a:gl.inet:mt3000:*:*:*:*:*:*:*:*
GL.iNet MT6000 4.8.* cpe:2.3:a:gl.inet:mt6000:*:*:*:*:*:*:*:*
GL.iNet X3000 4.8.* cpe:2.3:a:gl.inet:x3000:*:*:*:*:*:*:*:*
GL.iNet XE3000 4.8.* cpe:2.3:a:gl.inet:xe3000:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-19983

# POC Description Source Link Shenlong Link
AI-Generated POC Verified env Premium
Qwen3.6-35B-A3B · 10207 chars
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
100+ AI POC generations per month

III. Intelligence Information for CVE-2026-19983

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Vendor Advisories for CVE-2026-19983 (1)

Same Patch Batch · GL.iNet · 2026-08-17 · 5 CVEs total

CVE-2026-19979 8.3 HIGH GL.iNet XE3000 WebDAV Service MOVE authorization
CVE-2026-19980 7.4 HIGH GL.iNet XE3000 Language Update ui.update_langs code injection
CVE-2026-19981 7.4 HIGH GL.iNet XE3000 Wi-Fi Timer Power-Schedule Feature os command injection
CVE-2026-19982 7.4 HIGH GL.iNet BE9300/MT6000 Firewall-management RPC os command injection

IV. Related Vulnerabilities

Same product: A1300
Same vendor: GL.iNet
Same weakness: CWE-78

V. Comments for CVE-2026-19983

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