Vulnerability-Lookup

GHSA-Q36R-PJG6-PRM8

Vulnerability from github – Published: 2026-08-17 06:33 – Updated: 2026-08-17 06:33

Details

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."

Severity

8.3 (High)


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

6.9 (Medium)


                  
                    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

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JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-19983"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-77"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-17T05:17:09Z",
    "severity": "MODERATE"
  },
  "details": "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.\"",
  "id": "GHSA-q36r-pjg6-prm8",
  "modified": "2026-08-17T06:33:56Z",
  "published": "2026-08-17T06:33:56Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-19983"
    },
    {
      "type": "WEB",
      "url": "https://github.com/gl-inet/CVE-issues/blob/main/4.0.0/NAS%20Host-header%20bypass%20to%20unauthenticated%20root%20RCE.md"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/cve/CVE-2026-19983"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/submit/873919"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/vuln/391165"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/vuln/391165/cti"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "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",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2026-19983 (GCVE-0-2026-19983)

Vulnerability from cvelistv5 – Published: 2026-08-17 04:30 – Updated: 2026-08-17 15:29

Title

GL.iNet XE3000 NAS Command Service gl_nas_sys os command injection

Summary

Severity

6.9 (Medium)


                        
                          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

8.3 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L/E:X/RL:O/RC:C

8.3 (High)


                        
                          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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-17 15:29 UTC

CWE

CWE-78 - OS Command Injection
CWE-77 - Command Injection

Assigner

VulDB mitre root

References

5 references

URL	Tags
https://vuldb.com/vuln/391165	vdb-entry
https://vuldb.com/vuln/391165/cti	signaturepermissions-required
https://vuldb.com/cve/CVE-2026-19983	third-party-advisory
https://vuldb.com/submit/873919	third-party-advisory
https://github.com/gl-inet/CVE-issues/blob/main/4…	related

Impacted products

8 products

Vendor	Product	Version
GL.iNet	A1300	Affected: 4.8.* Unaffected: 4.9.0 cpe:2.3:a:gl.inet:a1300::::::::
GL.iNet	AX1800	Affected: 4.8.* Unaffected: 4.9.0 cpe:2.3:a:gl.inet:ax1800::::::::
GL.iNet	AXT1800	Affected: 4.8.* Unaffected: 4.9.0 cpe:2.3:a:gl.inet:axt1800::::::::
GL.iNet	MT2500	Affected: 4.8.* Unaffected: 4.9.0 cpe:2.3:a:gl.inet:mt2500::::::::
GL.iNet	MT3000	Affected: 4.8.* Unaffected: 4.9.0 cpe:2.3:a:gl.inet:mt3000::::::::
GL.iNet	MT6000	Affected: 4.8.* Unaffected: 4.9.0 cpe:2.3:a:gl.inet:mt6000::::::::
GL.iNet	X3000	Affected: 4.8.* Unaffected: 4.9.0 cpe:2.3:a:gl.inet:x3000::::::::
GL.iNet	XE3000	Affected: 4.8.* Unaffected: 4.9.0 cpe:2.3:a:gl.inet:xe3000::::::::

Credits

GLiNet (VulDB User) VulDB CNA Team

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-19983",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-17T15:29:02.892698Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-08-17T15:29:21.838Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "cpes": [
            "cpe:2.3:a:gl.inet:a1300:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "NAS Command Service"
          ],
          "product": "A1300",
          "vendor": "GL.iNet",
          "versions": [
            {
              "status": "affected",
              "version": "4.8.*"
            },
            {
              "status": "unaffected",
              "version": "4.9.0"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:gl.inet:ax1800:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "NAS Command Service"
          ],
          "product": "AX1800",
          "vendor": "GL.iNet",
          "versions": [
            {
              "status": "affected",
              "version": "4.8.*"
            },
            {
              "status": "unaffected",
              "version": "4.9.0"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:gl.inet:axt1800:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "NAS Command Service"
          ],
          "product": "AXT1800",
          "vendor": "GL.iNet",
          "versions": [
            {
              "status": "affected",
              "version": "4.8.*"
            },
            {
              "status": "unaffected",
              "version": "4.9.0"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:gl.inet:mt2500:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "NAS Command Service"
          ],
          "product": "MT2500",
          "vendor": "GL.iNet",
          "versions": [
            {
              "status": "affected",
              "version": "4.8.*"
            },
            {
              "status": "unaffected",
              "version": "4.9.0"
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        },
        {
          "cpes": [
            "cpe:2.3:a:gl.inet:mt3000:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "NAS Command Service"
          ],
          "product": "MT3000",
          "vendor": "GL.iNet",
          "versions": [
            {
              "status": "affected",
              "version": "4.8.*"
            },
            {
              "status": "unaffected",
              "version": "4.9.0"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:gl.inet:mt6000:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "NAS Command Service"
          ],
          "product": "MT6000",
          "vendor": "GL.iNet",
          "versions": [
            {
              "status": "affected",
              "version": "4.8.*"
            },
            {
              "status": "unaffected",
              "version": "4.9.0"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:gl.inet:x3000:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "NAS Command Service"
          ],
          "product": "X3000",
          "vendor": "GL.iNet",
          "versions": [
            {
              "status": "affected",
              "version": "4.8.*"
            },
            {
              "status": "unaffected",
              "version": "4.9.0"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:gl.inet:xe3000:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "NAS Command Service"
          ],
          "product": "XE3000",
          "vendor": "GL.iNet",
          "versions": [
            {
              "status": "affected",
              "version": "4.8.*"
            },
            {
              "status": "unaffected",
              "version": "4.9.0"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "GLiNet (VulDB User)"
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        {
          "lang": "en",
          "type": "coordinator",
          "value": "VulDB CNA Team"
        }
      ],
      "descriptions": [
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          "value": "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.\""
        }
      ],
      "metrics": [
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            "baseSeverity": "MEDIUM",
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            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L/E:X/RL:O/RC:C",
            "version": "3.1"
          }
        },
        {
          "cvssV3_0": {
            "baseScore": 8.3,
            "baseSeverity": "HIGH",
            "vectorString": "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",
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          }
        },
        {
          "cvssV2_0": {
            "baseScore": 7.5,
            "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P/E:ND/RL:OF/RC:C",
            "version": "2.0"
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      "references": [
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            "vdb-entry"
          ],
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        },
        {
          "name": "VDB-391165 | CTI Indicators (IOB, IOC, TTP, IOA)",
          "tags": [
            "signature",
            "permissions-required"
          ],
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        },
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          ],
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        },
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          "tags": [
            "third-party-advisory"
          ],
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        },
        {
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          "value": "VulDB entry last update"
        }
      ],
      "title": "GL.iNet XE3000 NAS Command Service gl_nas_sys os command injection",
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        "VulDB PVTS v202608"
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    }
  },
  "cveMetadata": {
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    "assignerShortName": "VulDB",
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    "datePublished": "2026-08-17T04:30:11.277Z",
    "dateReserved": "2026-08-16T13:38:32.594Z",
    "dateUpdated": "2026-08-17T15:29:21.838Z",
    "state": "PUBLISHED"
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  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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GHSA-Q36R-PJG6-PRM8

CVE-2026-19983 (GCVE-0-2026-19983)

Tags

Sightings

Nomenclature

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