CVE-2026-19983
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
- Versión: 4.0
- Vector: 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
- Puntuación base: 6.9
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 2.06%
- Percentil entre todas las CVEs puntuadas: 81
- Fecha de la puntuación: 6/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (8)
⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.
CWE
- CWE-77, CWE-78
Referencias
JSON original (NVD)
Mostrar
{
"id": "CVE-2026-19983",
"cveTags": [],
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-19983",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "none"
},
{
"automatable": "yes"
},
{
"technicalImpact": "partial"
}
],
"version": "2.0.3",
"timestamp": "2026-08-17T15:29:02.892698Z"
}
}
],
"cvssMetricV2": [
{
"type": "Secondary",
"source": "cna@vuldb.com",
"cvssData": {
"version": "2.0",
"baseScore": 7.5,
"accessVector": "NETWORK",
"vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
"authentication": "NONE",
"integrityImpact": "PARTIAL",
"accessComplexity": "LOW",
"availabilityImpact": "PARTIAL",
"confidentialityImpact": "PARTIAL"
},
"acInsufInfo": false,
"impactScore": 6.4,
"baseSeverity": "HIGH",
"obtainAllPrivilege": false,
"exploitabilityScore": 10,
"obtainUserPrivilege": false,
"obtainOtherPrivilege": false,
"userInteractionRequired": false
}
],
"cvssMetricV31": [
{
"type": "Secondary",
"source": "cna@vuldb.com",
"cvssData": {
"scope": "CHANGED",
"version": "3.1",
"baseScore": 8.3,
"attackVector": "NETWORK",
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L",
"integrityImpact": "LOW",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "LOW",
"privilegesRequired": "NONE",
"confidentialityImpact": "LOW"
},
"impactScore": 3.7,
"exploitabilityScore": 3.9
}
],
"cvssMetricV40": [
{
"type": "Secondary",
"source": "cna@vuldb.com",
"cvssData": {
"Safety": "NOT_DEFINED",
"version": "4.0",
"Recovery": "NOT_DEFINED",
"baseScore": 6.9,
"Automatable": "NOT_DEFINED",
"attackVector": "NETWORK",
"baseSeverity": "MEDIUM",
"valueDensity": "NOT_DEFINED",
"vectorString": "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",
"exploitMaturity": "NOT_DEFINED",
"providerUrgency": "NOT_DEFINED",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"privilegesRequired": "NONE",
"subIntegrityImpact": "LOW",
"vulnIntegrityImpact": "LOW",
"integrityRequirement": "NOT_DEFINED",
"modifiedAttackVector": "NOT_DEFINED",
"subAvailabilityImpact": "LOW",
"vulnAvailabilityImpact": "LOW",
"availabilityRequirement": "NOT_DEFINED",
"modifiedUserInteraction": "NOT_DEFINED",
"modifiedAttackComplexity": "NOT_DEFINED",
"subConfidentialityImpact": "LOW",
"vulnConfidentialityImpact": "LOW",
"confidentialityRequirement": "NOT_DEFINED",
"modifiedAttackRequirements": "NOT_DEFINED",
"modifiedPrivilegesRequired": "NOT_DEFINED",
"modifiedSubIntegrityImpact": "NOT_DEFINED",
"modifiedVulnIntegrityImpact": "NOT_DEFINED",
"vulnerabilityResponseEffort": "NOT_DEFINED",
"modifiedSubAvailabilityImpact": "NOT_DEFINED",
"modifiedVulnAvailabilityImpact": "NOT_DEFINED",
"modifiedSubConfidentialityImpact": "NOT_DEFINED",
"modifiedVulnConfidentialityImpact": "NOT_DEFINED"
}
}
]
},
"affected": [
{
"source": "cna@vuldb.com",
"affectedData": [
{
"cpes": [
"cpe:2.3:a:gl.inet:a1300:*:*:*:*:*:*:*:*"
],
"vendor": "GL.iNet",
"modules": [
"NAS Command Service"
],
"product": "A1300",
"versions": [
{
"status": "affected",
"version": "4.8.*"
},
{
"status": "unaffected",
"version": "4.9.0"
}
]
},
{
"cpes": [
"cpe:2.3:a:gl.inet:ax1800:*:*:*:*:*:*:*:*"
],
"vendor": "GL.iNet",
"modules": [
"NAS Command Service"
],
"product": "AX1800",
"versions": [
{
"status": "affected",
"version": "4.8.*"
},
{
"status": "unaffected",
"version": "4.9.0"
}
]
},
{
"cpes": [
"cpe:2.3:a:gl.inet:axt1800:*:*:*:*:*:*:*:*"
],
"vendor": "GL.iNet",
"modules": [
"NAS Command Service"
],
"product": "AXT1800",
"versions": [
{
"status": "affected",
"version": "4.8.*"
},
{
"status": "unaffected",
"version": "4.9.0"
}
]
},
{
"cpes": [
"cpe:2.3:a:gl.inet:mt2500:*:*:*:*:*:*:*:*"
],
"vendor": "GL.iNet",
"modules": [
"NAS Command Service"
],
"product": "MT2500",
"versions": [
{
"status": "affected",
"version": "4.8.*"
},
{
"status": "unaffected",
"version": "4.9.0"
}
]
},
{
"cpes": [
"cpe:2.3:a:gl.inet:mt3000:*:*:*:*:*:*:*:*"
],
"vendor": "GL.iNet",
"modules": [
"NAS Command Service"
],
"product": "MT3000",
"versions": [
{
"status": "affected",
"version": "4.8.*"
},
{
"status": "unaffected",
"version": "4.9.0"
}
]
},
{
"cpes": [
"cpe:2.3:a:gl.inet:mt6000:*:*:*:*:*:*:*:*"
],
"vendor": "GL.iNet",
"modules": [
"NAS Command Service"
],
"product": "MT6000",
"versions": [
{
"status": "affected",
"version": "4.8.*"
},
{
"status": "unaffected",
"version": "4.9.0"
}
]
},
{
"cpes": [
"cpe:2.3:a:gl.inet:x3000:*:*:*:*:*:*:*:*"
],
"vendor": "GL.iNet",
"modules": [
"NAS Command Service"
],
"product": "X3000",
"versions": [
{
"status": "affected",
"version": "4.8.*"
},
{
"status": "unaffected",
"version": "4.9.0"
}
]
},
{
"cpes": [
"cpe:2.3:a:gl.inet:xe3000:*:*:*:*:*:*:*:*"
],
"vendor": "GL.iNet",
"modules": [
"NAS Command Service"
],
"product": "XE3000",
"versions": [
{
"status": "affected",
"version": "4.8.*"
},
{
"status": "unaffected",
"version": "4.9.0"
}
]
}
]
}
],
"published": "2026-08-17T05:17:09.947",
"references": [
{
"url": "https://github.com/gl-inet/CVE-issues/blob/main/4.0.0/NAS%20Host-header%20bypass%20to%20unauthenticated%20root%20RCE.md",
"source": "cna@vuldb.com"
},
{
"url": "https://vuldb.com/cve/CVE-2026-19983",
"source": "cna@vuldb.com"
},
{
"url": "https://vuldb.com/submit/873919",
"source": "cna@vuldb.com"
},
{
"url": "https://vuldb.com/vuln/391165",
"source": "cna@vuldb.com"
},
{
"url": "https://vuldb.com/vuln/391165/cti",
"source": "cna@vuldb.com"
}
],
"vulnStatus": "Deferred",
"weaknesses": [
{
"type": "Secondary",
"source": "cna@vuldb.com",
"description": [
{
"lang": "en",
"value": "CWE-77"
},
{
"lang": "en",
"value": "CWE-78"
}
]
}
],
"descriptions": [
{
"lang": "en",
"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.\""
}
],
"lastModified": "2026-08-20T12:48:10.287",
"sourceIdentifier": "cna@vuldb.com"
}