CVE-2026-18583
Full vulnerability record from the local CVENow database.
Description
A weakness has been identified in mz-automation libiec61850 up to 1.6.1. This issue affects the function checkDataSetAccess of the file src/iec61850/server/mms_mapping/mms_mapping.c of the component MMS Request Handler. This manipulation causes out-of-bounds read. The attack can be initiated remotely. The exploit has been made available to the public and could be used for attacks. Upgrading to version 1.6.2 is capable of addressing this issue. Patch name: 062062daf4cb50c7aa76e01d6fb4d58fc9278a7d. Upgrading the affected component is recommended. The vendor was contacted early about this disclosure.
Severity
MEDIUM
CVSS score
5.5
(v4.0)
Vulnerability status
Deferred
Source identifier
Published
2026-08-03 06:16:37.100000
Last modified
2026-10-23 22:10:00.160000
View original CVE JSON
{
"id": "CVE-2026-18583",
"sourceIdentifier": "[email protected]",
"published": "2026-08-03T06:16:37.100",
"lastModified": "2026-10-23T22:10:00.160",
"vulnStatus": "Deferred",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "A weakness has been identified in mz-automation libiec61850 up to 1.6.1. This issue affects the function checkDataSetAccess of the file src/iec61850/server/mms_mapping/mms_mapping.c of the component MMS Request Handler. This manipulation causes out-of-bounds read. The attack can be initiated remotely. The exploit has been made available to the public and could be used for attacks. Upgrading to version 1.6.2 is capable of addressing this issue. Patch name: 062062daf4cb50c7aa76e01d6fb4d58fc9278a7d. Upgrading the affected component is recommended. The vendor was contacted early about this disclosure."
},
{
"lang": "es",
"value": "Se ha identificado una debilidad en mz-automation libiec61850 hasta la versión 1.6.1. Este problema afecta a la función checkDataSetAccess del archivo src/iec61850/server/mms_mapping/mms_mapping.c del componente MMS Request Gestor. Esta manipulación causa una lectura fuera de límites. El ataque puede iniciarse de forma remota. El exploit se ha hecho público y podría usarse para ataques. La actualización a la versión 1.6.2 es capaz de abordar este problema. Nombre del parche: 062062daf4cb50c7aa76e01d6fb4d58fc9278a7d. Se recomienda actualizar el componente afectado. Se contactó con el proveedor con antelación sobre esta divulgación."
}
],
"affected": [
{
"source": "[email protected]",
"affectedData": [
{
"vendor": "mz-automation",
"product": "libiec61850",
"cpes": [
"cpe:2.3:a:mz-automation:libiec61850:*:*:*:*:*:*:*:*"
],
"modules": [
"MMS Request 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:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/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": 5.5,
"baseSeverity": "MEDIUM",
"attackVector": "NETWORK",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"privilegesRequired": "NONE",
"userInteraction": "NONE",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "NONE",
"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": {
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"attackVector": "NETWORK",
"attackComplexity": "LOW",
"privilegesRequired": "NONE",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"availabilityImpact": "LOW"
},
"exploitabilityScore": 3.9,
"impactScore": 1.4
}
],
"cvssMetricV2": [
{
"source": "[email protected]",
"type": "Secondary",
"cvssData": {
"version": "2.0",
"vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
"baseScore": 5.0,
"accessVector": "NETWORK",
"accessComplexity": "LOW",
"authentication": "NONE",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"availabilityImpact": "PARTIAL"
},
"baseSeverity": "MEDIUM",
"exploitabilityScore": 10.0,
"impactScore": 2.9,
"acInsufInfo": false,
"obtainAllPrivilege": false,
"obtainUserPrivilege": false,
"obtainOtherPrivilege": false,
"userInteractionRequired": false
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"timestamp": "2026-08-03T19:58:32.470583Z",
"id": "CVE-2026-18583",
"options": [
{
"exploitation": "poc"
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{
"automatable": "yes"
},
{
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],
"role": "CISA Coordinator",
"version": "2.0.3"
}
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]
},
"weaknesses": [
{
"source": "[email protected]",
"type": "Secondary",
"description": [
{
"lang": "en",
"value": "CWE-119"
},
{
"lang": "en",
"value": "CWE-125"
}
]
}
],
"references": [
{
"url": "https://github.com/gff-cw/information/issues/3",
"source": "[email protected]"
},
{
"url": "https://github.com/mz-automation/libiec61850/",
"source": "[email protected]"
},
{
"url": "https://github.com/mz-automation/libiec61850/commit/062062daf4cb50c7aa76e01d6fb4d58fc9278a7d",
"source": "[email protected]"
},
{
"url": "https://github.com/mz-automation/libiec61850/releases/tag/v1.6.2",
"source": "[email protected]"
},
{
"url": "https://github.com/mz-automation/libiec61850/security/advisories/GHSA-7v2x-39mw-2979",
"source": "[email protected]"
},
{
"url": "https://vuldb.com/cve/CVE-2026-18583",
"source": "[email protected]"
},
{
"url": "https://vuldb.com/submit/844921",
"source": "[email protected]"
},
{
"url": "https://vuldb.com/vuln/385412",
"source": "[email protected]"
},
{
"url": "https://vuldb.com/vuln/385412/cti",
"source": "[email protected]"
}
]
}