{"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"}, "containers": {"cna": {"providerMetadata": {"orgId": "455daabc-a392-441d-aa46-37d35189897c", "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"}]}, {"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"}], "defaultStatus": "unaffected"}, {"vendor": "Loytec", "product": "L-INX", "versions": [{"status": "affected", "version": "0", "lessThanOrEqual": "8.4.16", "versionType": "custom"}], "defaultStatus": "unaffected"}, {"vendor": "Loytec", "product": "L-GATE", "versions": [{"status": "affected", "version": "0", "lessThanOrEqual": "8.4.16", "versionType": "custom"}], "defaultStatus": "unaffected"}, {"vendor": "Loytec", "product": "L-ROC", "versions": [{"status": "affected", "version": "0", "lessThanOrEqual": "8.4.16", "versionType": "custom"}], "defaultStatus": "unaffected"}, {"vendor": "Loytec", "product": "L-IOB", "versions": [{"status": "affected", "version": "0", "lessThanOrEqual": "8.4.16", "versionType": "custom"}], "defaultStatus": "unaffected"}, {"vendor": "Loytec", "product": "L-DALI", "versions": [{"status": "affected", "version": "0", "lessThanOrEqual": "8.4.16", "versionType": "custom"}], "defaultStatus": "unaffected"}, {"vendor": "Loytec", "product": "L-VIS", "versions": [{"status": "affected", "version": "0", "lessThanOrEqual": "8.4.16", "versionType": "custom"}], "defaultStatus": "unaffected"}, {"vendor": "Loytec", "product": "L-PAD", "versions": [{"status": "affected", "version": "0", "lessThanOrEqual": "8.4.16", "versionType": "custom"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "Stack-based Buffer Overflow (CWE-121)\u00a0in `/usr/bin/ltsudo` `cmd_ipaddr_conflict` in Loytec LIP-ME201C,\u00a0L-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.", "supportingMedia": [{"type": "text/html", "base64": false, "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", "tags": ["vendor-advisory"]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "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"}}], "solutions": [{"lang": "en", "value": "Upgrade to firmware version 8.4.18.", "supportingMedia": [{"type": "text/html", "base64": false, "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"}, "x_generator": {"engine": "Vulnogram 1.0.2"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "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"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-55728", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-07-24T14:55:52.913648Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-07-24T14:55:56.965Z"}}], "cna": {"title": "Loytec LINX firmware: Stack-based Buffer Overflow in cmd_ipaddr_conflict", "source": {"discovery": "EXTERNAL"}, "credits": [{"lang": "en", "type": "finder", "value": "Daniel Hulliger, armasuisse CYD Campus"}, {"lang": "en", "type": "finder", "value": "Damian Pfammatter, armasuisse CYD Campus"}], "impacts": [{"capecId": "CAPEC-100", "descriptions": [{"lang": "en", "value": "CAPEC-100 Overflow Buffers"}]}, {"capecId": "CAPEC-233", "descriptions": [{"lang": "en", "value": "CAPEC-233 Privilege Escalation"}]}], "metrics": [{"format": "CVSS", "cvssV4_0": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 3.8, "Automatable": "NOT_DEFINED", "attackVector": "LOCAL", "baseSeverity": "LOW", "valueDensity": "NOT_DEFINED", "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", "exploitMaturity": "UNREPORTED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "HIGH", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "LOW", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "affected": [{"vendor": "Loytec", "product": "LIP-ME20xC", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "8.4.16"}], "defaultStatus": "unaffected"}, {"vendor": "Loytec", "product": "L-INX", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "8.4.16"}], "defaultStatus": "unaffected"}, {"vendor": "Loytec", "product": "L-GATE", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "8.4.16"}], "defaultStatus": "unaffected"}, {"vendor": "Loytec", "product": "L-ROC", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "8.4.16"}], "defaultStatus": "unaffected"}, {"vendor": "Loytec", "product": "L-IOB", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "8.4.16"}], "defaultStatus": "unaffected"}, {"vendor": "Loytec", "product": "L-DALI", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "8.4.16"}], "defaultStatus": "unaffected"}, {"vendor": "Loytec", "product": "L-VIS", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "8.4.16"}], "defaultStatus": "unaffected"}, {"vendor": "Loytec", "product": "L-PAD", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "8.4.16"}], "defaultStatus": "unaffected"}], "solutions": [{"lang": "en", "value": "Upgrade to firmware version 8.4.18.", "supportingMedia": [{"type": "text/html", "value": "Upgrade to firmware version 8.4.18.", "base64": false}]}], "references": [{"url": "https://www.loytec.com/support/product-security/advisories/8523-dibt-cve-20260526-0005-stack-buffer-overflow-in-cmd_ipaddr_conflict-low", "tags": ["vendor-advisory"]}], "x_generator": {"engine": "Vulnogram 1.0.2"}, "descriptions": [{"lang": "en", "value": "Stack-based Buffer Overflow (CWE-121)\u00a0in `/usr/bin/ltsudo` `cmd_ipaddr_conflict` in Loytec LIP-ME201C,\u00a0L-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.", "supportingMedia": [{"type": "text/html", "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.", "base64": false}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-121", "description": "CWE-121 Stack-based buffer overflow"}]}], "providerMetadata": {"orgId": "455daabc-a392-441d-aa46-37d35189897c", "shortName": "NCSC.ch", "dateUpdated": "2026-07-24T13:58:35.474Z"}}}, "cveMetadata": {"cveId": "CVE-2026-55728", "state": "PUBLISHED", "dateUpdated": "2026-07-24T14:56:40.020Z", "dateReserved": "2026-06-17T09:48:05.267Z", "assignerOrgId": "455daabc-a392-441d-aa46-37d35189897c", "datePublished": "2026-07-24T13:58:35.474Z", "assignerShortName": "NCSC.ch"}, "dataVersion": "5.2"}

{}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,8.4.16]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "L-DALI", "source": "cna", "vendor": "Loytec"}, "product": "l-dali", "vendor": "loytec"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,8.4.16]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "product": "l-gate", "vendor": "loytec"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,8.4.16]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "product": "l-inx", "vendor": "loytec"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,8.4.16]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "product": "l-iob", "vendor": "loytec"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,8.4.16]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "L-PAD", "source": "cna", "vendor": "Loytec"}, "product": "l-pad", "vendor": "loytec"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,8.4.16]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "L-ROC", "source": "cna", "vendor": "Loytec"}, "product": "l-roc", "vendor": "loytec"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,8.4.16]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "product": "l-vis", "vendor": "loytec"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,8.4.16]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "product": "lip-me20xc", "vendor": "loytec"}], "created": "2026-07-27T06:30:10.370404+00:00", "updated": "2026-07-27T15:23:25.955243+00:00", "vendors": ["loytec", "loytec$PRODUCT$l-dali", "loytec$PRODUCT$l-gate", "loytec$PRODUCT$l-inx", "loytec$PRODUCT$l-iob", "loytec$PRODUCT$l-pad", "loytec$PRODUCT$l-roc", "loytec$PRODUCT$l-vis", "loytec$PRODUCT$lip-me20xc"]}