CVE-2026-19206
Full vulnerability record from the local CVENow database.
Description
A security flaw has been discovered in MZ Automation libiec61850 up to 1.6.1. This affects the function SVReceiver_stopThreadless of the file src/sampled_values/sv_subscriber.c of the component ASDU Element Handler. Performing a manipulation results in heap-based buffer overflow. The attack must be initiated from a local position. The exploit has been released to the public and may be used for attacks. Upgrading to version 1.6.2 is able to mitigate this issue. The patch is named a96bd674e0238276dd1387d31d52e55229d0771e. The affected component should be upgraded.
Severity
LOW
CVSS score
1.9
(v4.0)
Vulnerability status
Deferred
Source identifier
Published
2026-08-07 14:16:59.020000
Last modified
2026-10-23 21:10:00.157000
View original CVE JSON
{
"id": "CVE-2026-19206",
"sourceIdentifier": "[email protected]",
"published": "2026-08-07T14:16:59.020",
"lastModified": "2026-10-23T21:10:00.157",
"vulnStatus": "Deferred",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "A security flaw has been discovered in MZ Automation libiec61850 up to 1.6.1. This affects the function SVReceiver_stopThreadless of the file src/sampled_values/sv_subscriber.c of the component ASDU Element Handler. Performing a manipulation results in heap-based buffer overflow. The attack must be initiated from a local position. The exploit has been released to the public and may be used for attacks. Upgrading to version 1.6.2 is able to mitigate this issue. The patch is named a96bd674e0238276dd1387d31d52e55229d0771e. The affected component should be upgraded."
},
{
"lang": "es",
"value": "Una falla de seguridad ha sido descubierta en MZ Automation libiec61850 hasta la versión 1.6.1. Esto afecta la función SVReceiver_stopThreadless del archivo src/sampled_values/sv_subscriber.c del componente Gestor de Elementos ASDU. Realizar una manipulación resulta en un desbordamiento de búfer basado en montículo. El ataque debe iniciarse desde una posición local. El exploit ha sido publicado y puede ser utilizado para ataques. La actualización a la versión 1.6.2 es capaz de mitigar este problema. El parche se llama a96bd674e0238276dd1387d31d52e55229d0771e. El componente afectado debe ser actualizado."
}
],
"affected": [
{
"source": "[email protected]",
"affectedData": [
{
"vendor": "MZ Automation",
"product": "libiec61850",
"cpes": [
"cpe:2.3:a:mz_automation:libiec61850:*:*:*:*:*:*:*:*"
],
"modules": [
"ASDU Element Handler"
],
"versions": [
{
"version": "1.6.0",
"status": "affected"
},
{
"version": "1.6.1",
"status": "affected"
},
{
"version": "1.6.2",
"status": "unaffected"
}
]
}
]
}
],
"metrics": {
"cvssMetricV40": [
{
"source": "[email protected]",
"type": "Secondary",
"cvssData": {
"version": "4.0",
"vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/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",
"baseScore": 1.9,
"baseSeverity": "LOW",
"attackVector": "LOCAL",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"privilegesRequired": "LOW",
"userInteraction": "NONE",
"vulnConfidentialityImpact": "LOW",
"vulnIntegrityImpact": "LOW",
"vulnAvailabilityImpact": "LOW",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"subAvailabilityImpact": "NONE",
"exploitMaturity": "PROOF_OF_CONCEPT",
"confidentialityRequirement": "NOT_DEFINED",
"integrityRequirement": "NOT_DEFINED",
"availabilityRequirement": "NOT_DEFINED",
"modifiedAttackVector": "NOT_DEFINED",
"modifiedAttackComplexity": "NOT_DEFINED",
"modifiedAttackRequirements": "NOT_DEFINED",
"modifiedPrivilegesRequired": "NOT_DEFINED",
"modifiedUserInteraction": "NOT_DEFINED",
"modifiedVulnConfidentialityImpact": "NOT_DEFINED",
"modifiedVulnIntegrityImpact": "NOT_DEFINED",
"modifiedVulnAvailabilityImpact": "NOT_DEFINED",
"modifiedSubConfidentialityImpact": "NOT_DEFINED",
"modifiedSubIntegrityImpact": "NOT_DEFINED",
"modifiedSubAvailabilityImpact": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"valueDensity": "NOT_DEFINED",
"vulnerabilityResponseEffort": "NOT_DEFINED",
"providerUrgency": "NOT_DEFINED"
}
}
],
"cvssMetricV31": [
{
"source": "[email protected]",
"type": "Secondary",
"cvssData": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L",
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"attackVector": "LOCAL",
"attackComplexity": "LOW",
"privilegesRequired": "LOW",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"availabilityImpact": "LOW"
},
"exploitabilityScore": 1.8,
"impactScore": 3.4
}
],
"cvssMetricV2": [
{
"source": "[email protected]",
"type": "Secondary",
"cvssData": {
"version": "2.0",
"vectorString": "AV:L/AC:L/Au:S/C:P/I:P/A:P",
"baseScore": 4.3,
"accessVector": "LOCAL",
"accessComplexity": "LOW",
"authentication": "SINGLE",
"confidentialityImpact": "PARTIAL",
"integrityImpact": "PARTIAL",
"availabilityImpact": "PARTIAL"
},
"baseSeverity": "MEDIUM",
"exploitabilityScore": 3.1,
"impactScore": 6.4,
"acInsufInfo": false,
"obtainAllPrivilege": false,
"obtainUserPrivilege": false,
"obtainOtherPrivilege": false,
"userInteractionRequired": false
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"timestamp": "2026-08-07T14:21:31.882791Z",
"id": "CVE-2026-19206",
"options": [
{
"exploitation": "poc"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
]
},
"weaknesses": [
{
"source": "[email protected]",
"type": "Secondary",
"description": [
{
"lang": "en",
"value": "CWE-119"
},
{
"lang": "en",
"value": "CWE-122"
}
]
}
],
"references": [
{
"url": "https://github.com/mz-automation/libiec61850/commit/a96bd674e0238276dd1387d31d52e55229d0771e",
"source": "[email protected]"
},
{
"url": "https://github.com/mz-automation/libiec61850/issues/598",
"source": "[email protected]"
},
{
"url": "https://github.com/mz-automation/libiec61850/issues/598#issuecomment-4858659113",
"source": "[email protected]"
},
{
"url": "https://github.com/mz-automation/libiec61850/releases/tag/v1.6.2",
"source": "[email protected]"
},
{
"url": "https://vuldb.com/cve/CVE-2026-19206",
"source": "[email protected]"
},
{
"url": "https://vuldb.com/submit/864840",
"source": "[email protected]"
},
{
"url": "https://vuldb.com/vuln/386950",
"source": "[email protected]"
},
{
"url": "https://vuldb.com/vuln/386950/cti",
"source": "[email protected]"
}
]
}