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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-55728",
"assignerOrgId": "455daabc-a392-441d-aa46-37d35189897c",
"state": "PUBLISHED",
"assignerShortName": "NCSC.ch",
"dateReserved": "2026-06-17T09:48:05.267Z",
"datePublished": "2026-07-24T13:58:35.474Z",
"dateUpdated": "2026-07-24T14:56:40.020Z"
},
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"shortName": "NCSC.ch",
"dateUpdated": "2026-07-24T13:58:35.474Z"
},
"title": "Loytec LINX firmware: Stack-based Buffer Overflow in cmd_ipaddr_conflict",
"problemTypes": [
{
"descriptions": [
{
"lang": "en",
"cweId": "CWE-121",
"description": "CWE-121 Stack-based buffer overflow",
"type": "CWE"
}
]
}
],
"impacts": [
{
"capecId": "CAPEC-100",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-100 Overflow Buffers"
}
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},
{
"capecId": "CAPEC-233",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-233 Privilege Escalation"
}
]
}
],
"affected": [
{
"vendor": "Loytec",
"product": "LIP-ME20xC",
"versions": [
{
"status": "affected",
"version": "0",
"lessThanOrEqual": "8.4.16",
"versionType": "custom"
}
],
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{
"vendor": "Loytec",
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"vendor": "Loytec",
"product": "L-IOB",
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"status": "affected",
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"product": "L-DALI",
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"vendor": "Loytec",
"product": "L-VIS",
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"version": "0",
"lessThanOrEqual": "8.4.16",
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{
"vendor": "Loytec",
"product": "L-PAD",
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"status": "affected",
"version": "0",
"lessThanOrEqual": "8.4.16",
"versionType": "custom"
}
],
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}
],
"descriptions": [
{
"lang": "en",
"value": "Stack-based Buffer Overflow (CWE-121) in `/usr/bin/ltsudo` `cmd_ipaddr_conflict` in Loytec LIP-ME201C, L-INX, L-GATE, L-ROC, L-IOB, L-DALI, L-VIS and L-PAD through 8.4.16 on LINX-A64 allows a `superadmin`-group attacker to trigger a SUID-root process abort or potentially elevate privileges via an overly long interface-name argument.",
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"value": "Stack-based Buffer Overflow (CWE-121) in `/usr/bin/ltsudo` `cmd_ipaddr_conflict` in Loytec LIP-ME201C, L-INX, L-GATE, L-ROC, L-IOB, L-DALI, L-VIS and L-PAD through 8.4.16 on LINX-A64 allows a `superadmin`-group attacker to trigger a SUID-root process abort or potentially elevate privileges via an overly long interface-name argument."
}
]
}
],
"references": [
{
"url": "https://www.loytec.com/support/product-security/advisories/8523-dibt-cve-20260526-0005-stack-buffer-overflow-in-cmd_ipaddr_conflict-low",
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"vendor-advisory"
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}
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"value": "GENERAL"
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"cvssV4_0": {
"attackVector": "LOCAL",
"attackComplexity": "LOW",
"attackRequirements": "PRESENT",
"privilegesRequired": "HIGH",
"userInteraction": "NONE",
"vulnConfidentialityImpact": "HIGH",
"subConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "HIGH",
"subIntegrityImpact": "NONE",
"vulnAvailabilityImpact": "LOW",
"subAvailabilityImpact": "NONE",
"exploitMaturity": "UNREPORTED",
"Safety": "NOT_DEFINED",
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"valueDensity": "NOT_DEFINED",
"vulnerabilityResponseEffort": "NOT_DEFINED",
"providerUrgency": "NOT_DEFINED",
"version": "4.0",
"baseSeverity": "LOW",
"baseScore": 3.8,
"vectorString": "CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:U"
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],
"solutions": [
{
"lang": "en",
"value": "Upgrade to firmware version 8.4.18.",
"supportingMedia": [
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"value": "Upgrade to firmware version 8.4.18."
}
]
}
],
"credits": [
{
"lang": "en",
"value": "Daniel Hulliger, armasuisse CYD Campus",
"type": "finder"
},
{
"lang": "en",
"value": "Damian Pfammatter, armasuisse CYD Campus",
"type": "finder"
}
],
"source": {
"discovery": "EXTERNAL"
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"content": {
"timestamp": "2026-07-24T14:55:52.913648Z",
"id": "CVE-2026-55728",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-07-24T14:56:40.020Z"
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}