Vulnerability-Lookup

CVE-2026-55728 (GCVE-0-2026-55728)

Vulnerability from cvelistv5 – Published: 2026-07-24 13:58 – Updated: 2026-07-24 14:56

Title

Loytec LINX firmware: Stack-based Buffer Overflow in cmd_ipaddr_conflict

Summary

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.

Severity

3.8 (Low)


                        
                          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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-24 14:55 UTC

CWE

CWE-121 - Stack-based buffer overflow

Assigner

NCSC.ch CNA under the mitre root

CNA scorecard B 79/100 over 82 records in the last 180 days details

References

1 reference

URL	Tags
https://www.loytec.com/support/product-security/a…	vendor-advisory

Impacted products

8 products

Vendor	Product	Version	CPE status
Loytec	LIP-ME20xC	Affected: 0 , ≤ 8.4.16 (custom)	guessed
Loytec	L-INX	Affected: 0 , ≤ 8.4.16 (custom)	guessed
Loytec	L-GATE	Affected: 0 , ≤ 8.4.16 (custom)	guessed
Loytec	L-ROC	Affected: 0 , ≤ 8.4.16 (custom)	guessed
Loytec	L-IOB	Affected: 0 , ≤ 8.4.16 (custom)	guessed
Loytec	L-DALI	Affected: 0 , ≤ 8.4.16 (custom)	guessed
Loytec	L-VIS	Affected: 0 , ≤ 8.4.16 (custom)	guessed
Loytec	L-PAD	Affected: 0 , ≤ 8.4.16 (custom)	guessed

Credits

Daniel Hulliger, armasuisse CYD Campus Damian Pfammatter, armasuisse CYD Campus

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-55728",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-07-24T14:55:52.913648Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-07-24T14:56:40.020Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "LIP-ME20xC",
          "vendor": "Loytec",
          "versions": [
            {
              "lessThanOrEqual": "8.4.16",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "L-INX",
          "vendor": "Loytec",
          "versions": [
            {
              "lessThanOrEqual": "8.4.16",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "L-GATE",
          "vendor": "Loytec",
          "versions": [
            {
              "lessThanOrEqual": "8.4.16",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "L-ROC",
          "vendor": "Loytec",
          "versions": [
            {
              "lessThanOrEqual": "8.4.16",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "L-IOB",
          "vendor": "Loytec",
          "versions": [
            {
              "lessThanOrEqual": "8.4.16",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "L-DALI",
          "vendor": "Loytec",
          "versions": [
            {
              "lessThanOrEqual": "8.4.16",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "L-VIS",
          "vendor": "Loytec",
          "versions": [
            {
              "lessThanOrEqual": "8.4.16",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "L-PAD",
          "vendor": "Loytec",
          "versions": [
            {
              "lessThanOrEqual": "8.4.16",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Daniel Hulliger, armasuisse CYD Campus"
        },
        {
          "lang": "en",
          "type": "finder",
          "value": "Damian Pfammatter, armasuisse CYD Campus"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "Stack-based Buffer Overflow (CWE-121)\u0026nbsp;in `/usr/bin/ltsudo` `cmd_ipaddr_conflict` in  Loytec LIP-ME201C,\u0026nbsp;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."
            }
          ],
          "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."
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-100",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-100 Overflow Buffers"
            }
          ]
        },
        {
          "capecId": "CAPEC-233",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-233 Privilege Escalation"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "PRESENT",
            "attackVector": "LOCAL",
            "baseScore": 3.8,
            "baseSeverity": "LOW",
            "exploitMaturity": "UNREPORTED",
            "privilegesRequired": "HIGH",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "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",
            "version": "4.0",
            "vulnAvailabilityImpact": "LOW",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-121",
              "description": "CWE-121 Stack-based buffer overflow",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-24T13:58:35.474Z",
        "orgId": "455daabc-a392-441d-aa46-37d35189897c",
        "shortName": "NCSC.ch"
      },
      "references": [
        {
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://www.loytec.com/support/product-security/advisories/8523-dibt-cve-20260526-0005-stack-buffer-overflow-in-cmd_ipaddr_conflict-low"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "Upgrade to firmware version 8.4.18."
            }
          ],
          "value": "Upgrade to firmware version 8.4.18."
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "Loytec LINX firmware: Stack-based Buffer Overflow in cmd_ipaddr_conflict",
      "x_generator": {
        "engine": "Vulnogram 1.0.2"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "455daabc-a392-441d-aa46-37d35189897c",
    "assignerShortName": "NCSC.ch",
    "cveId": "CVE-2026-55728",
    "datePublished": "2026-07-24T13:58:35.474Z",
    "dateReserved": "2026-06-17T09:48:05.267Z",
    "dateUpdated": "2026-07-24T14:56:40.020Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-55728",
      "date": "2026-10-26",
      "epss": "0.00159",
      "percentile": "0.05026"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "LIP-ME20xC",
                "vendor": "Loytec",
                "versions": [
                  {
                    "lessThanOrEqual": "8.4.16",
                    "status": "affected",
                    "version": "0",
                    "versionType": "custom"
                  }
                ]
              },
              {
                "defaultStatus": "unaffected",
                "product": "L-INX",
                "vendor": "Loytec",
                "versions": [
                  {
                    "lessThanOrEqual": "8.4.16",
                    "status": "affected",
                    "version": "0",
                    "versionType": "custom"
                  }
                ]
              },
              {
                "defaultStatus": "unaffected",
                "product": "L-GATE",
                "vendor": "Loytec",
                "versions": [
                  {
                    "lessThanOrEqual": "8.4.16",
                    "status": "affected",
                    "version": "0",
                    "versionType": "custom"
                  }
                ]
              },
              {
                "defaultStatus": "unaffected",
                "product": "L-ROC",
                "vendor": "Loytec",
                "versions": [
                  {
                    "lessThanOrEqual": "8.4.16",
                    "status": "affected",
                    "version": "0",
                    "versionType": "custom"
                  }
                ]
              },
              {
                "defaultStatus": "unaffected",
                "product": "L-IOB",
                "vendor": "Loytec",
                "versions": [
                  {
                    "lessThanOrEqual": "8.4.16",
                    "status": "affected",
                    "version": "0",
                    "versionType": "custom"
                  }
                ]
              },
              {
                "defaultStatus": "unaffected",
                "product": "L-DALI",
                "vendor": "Loytec",
                "versions": [
                  {
                    "lessThanOrEqual": "8.4.16",
                    "status": "affected",
                    "version": "0",
                    "versionType": "custom"
                  }
                ]
              },
              {
                "defaultStatus": "unaffected",
                "product": "L-VIS",
                "vendor": "Loytec",
                "versions": [
                  {
                    "lessThanOrEqual": "8.4.16",
                    "status": "affected",
                    "version": "0",
                    "versionType": "custom"
                  }
                ]
              },
              {
                "defaultStatus": "unaffected",
                "product": "L-PAD",
                "vendor": "Loytec",
                "versions": [
                  {
                    "lessThanOrEqual": "8.4.16",
                    "status": "affected",
                    "version": "0",
                    "versionType": "custom"
                  }
                ]
              }
            ],
            "source": "vulnerability@ncsc.ch"
          }
        ],
        "cveTags": [],
        "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."
          }
        ],
        "id": "CVE-2026-55728",
        "lastModified": "2026-07-27T20:32:11.620",
        "metrics": {
          "cvssMetricV40": [
            {
              "cvssData": {
                "Automatable": "NOT_DEFINED",
                "Recovery": "NOT_DEFINED",
                "Safety": "NOT_DEFINED",
                "attackComplexity": "LOW",
                "attackRequirements": "PRESENT",
                "attackVector": "LOCAL",
                "availabilityRequirement": "NOT_DEFINED",
                "baseScore": 3.8,
                "baseSeverity": "LOW",
                "confidentialityRequirement": "NOT_DEFINED",
                "exploitMaturity": "UNREPORTED",
                "integrityRequirement": "NOT_DEFINED",
                "modifiedAttackComplexity": "NOT_DEFINED",
                "modifiedAttackRequirements": "NOT_DEFINED",
                "modifiedAttackVector": "NOT_DEFINED",
                "modifiedPrivilegesRequired": "NOT_DEFINED",
                "modifiedSubAvailabilityImpact": "NOT_DEFINED",
                "modifiedSubConfidentialityImpact": "NOT_DEFINED",
                "modifiedSubIntegrityImpact": "NOT_DEFINED",
                "modifiedUserInteraction": "NOT_DEFINED",
                "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
                "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
                "modifiedVulnIntegrityImpact": "NOT_DEFINED",
                "privilegesRequired": "HIGH",
                "providerUrgency": "NOT_DEFINED",
                "subAvailabilityImpact": "NONE",
                "subConfidentialityImpact": "NONE",
                "subIntegrityImpact": "NONE",
                "userInteraction": "NONE",
                "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/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",
                "version": "4.0",
                "vulnAvailabilityImpact": "LOW",
                "vulnConfidentialityImpact": "HIGH",
                "vulnIntegrityImpact": "HIGH",
                "vulnerabilityResponseEffort": "NOT_DEFINED"
              },
              "source": "vulnerability@ncsc.ch",
              "type": "Secondary"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
                "id": "CVE-2026-55728",
                "options": [
                  {
                    "exploitation": "none"
                  },
                  {
                    "automatable": "no"
                  },
                  {
                    "technicalImpact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-07-24T14:55:52.913648Z",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2026-07-24T15:18:30.950",
        "references": [
          {
            "source": "vulnerability@ncsc.ch",
            "url": "https://www.loytec.com/support/product-security/advisories/8523-dibt-cve-20260526-0005-stack-buffer-overflow-in-cmd_ipaddr_conflict-low"
          }
        ],
        "sourceIdentifier": "vulnerability@ncsc.ch",
        "vulnStatus": "Deferred",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-121"
              }
            ],
            "source": "vulnerability@ncsc.ch",
            "type": "Secondary"
          }
        ]
      }
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2026-55728",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "total"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-07-24T14:55:52.913648Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-07-24T14:55:56.965Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "defaultStatus": "unaffected",
              "product": "LIP-ME20xC",
              "vendor": "Loytec",
              "versions": [
                {
                  "lessThanOrEqual": "8.4.16",
                  "status": "affected",
                  "version": "0",
                  "versionType": "custom"
                }
              ]
            },
            {
              "defaultStatus": "unaffected",
              "product": "L-INX",
              "vendor": "Loytec",
              "versions": [
                {
                  "lessThanOrEqual": "8.4.16",
                  "status": "affected",
                  "version": "0",
                  "versionType": "custom"
                }
              ]
            },
            {
              "defaultStatus": "unaffected",
              "product": "L-GATE",
              "vendor": "Loytec",
              "versions": [
                {
                  "lessThanOrEqual": "8.4.16",
                  "status": "affected",
                  "version": "0",
                  "versionType": "custom"
                }
              ]
            },
            {
              "defaultStatus": "unaffected",
              "product": "L-ROC",
              "vendor": "Loytec",
              "versions": [
                {
                  "lessThanOrEqual": "8.4.16",
                  "status": "affected",
                  "version": "0",
                  "versionType": "custom"
                }
              ]
            },
            {
              "defaultStatus": "unaffected",
              "product": "L-IOB",
              "vendor": "Loytec",
              "versions": [
                {
                  "lessThanOrEqual": "8.4.16",
                  "status": "affected",
                  "version": "0",
                  "versionType": "custom"
                }
              ]
            },
            {
              "defaultStatus": "unaffected",
              "product": "L-DALI",
              "vendor": "Loytec",
              "versions": [
                {
                  "lessThanOrEqual": "8.4.16",
                  "status": "affected",
                  "version": "0",
                  "versionType": "custom"
                }
              ]
            },
            {
              "defaultStatus": "unaffected",
              "product": "L-VIS",
              "vendor": "Loytec",
              "versions": [
                {
                  "lessThanOrEqual": "8.4.16",
                  "status": "affected",
                  "version": "0",
                  "versionType": "custom"
                }
              ]
            },
            {
              "defaultStatus": "unaffected",
              "product": "L-PAD",
              "vendor": "Loytec",
              "versions": [
                {
                  "lessThanOrEqual": "8.4.16",
                  "status": "affected",
                  "version": "0",
                  "versionType": "custom"
                }
              ]
            }
          ],
          "credits": [
            {
              "lang": "en",
              "type": "finder",
              "value": "Daniel Hulliger, armasuisse CYD Campus"
            },
            {
              "lang": "en",
              "type": "finder",
              "value": "Damian Pfammatter, armasuisse CYD Campus"
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "supportingMedia": [
                {
                  "base64": false,
                  "type": "text/html",
                  "value": "Stack-based Buffer Overflow (CWE-121)\u0026nbsp;in `/usr/bin/ltsudo` `cmd_ipaddr_conflict` in  Loytec LIP-ME201C,\u0026nbsp;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."
                }
              ],
              "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."
            }
          ],
          "impacts": [
            {
              "capecId": "CAPEC-100",
              "descriptions": [
                {
                  "lang": "en",
                  "value": "CAPEC-100 Overflow Buffers"
                }
              ]
            },
            {
              "capecId": "CAPEC-233",
              "descriptions": [
                {
                  "lang": "en",
                  "value": "CAPEC-233 Privilege Escalation"
                }
              ]
            }
          ],
          "metrics": [
            {
              "cvssV4_0": {
                "Automatable": "NOT_DEFINED",
                "Recovery": "NOT_DEFINED",
                "Safety": "NOT_DEFINED",
                "attackComplexity": "LOW",
                "attackRequirements": "PRESENT",
                "attackVector": "LOCAL",
                "baseScore": 3.8,
                "baseSeverity": "LOW",
                "exploitMaturity": "UNREPORTED",
                "privilegesRequired": "HIGH",
                "providerUrgency": "NOT_DEFINED",
                "subAvailabilityImpact": "NONE",
                "subConfidentialityImpact": "NONE",
                "subIntegrityImpact": "NONE",
                "userInteraction": "NONE",
                "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",
                "version": "4.0",
                "vulnAvailabilityImpact": "LOW",
                "vulnConfidentialityImpact": "HIGH",
                "vulnIntegrityImpact": "HIGH",
                "vulnerabilityResponseEffort": "NOT_DEFINED"
              },
              "format": "CVSS",
              "scenarios": [
                {
                  "lang": "en",
                  "value": "GENERAL"
                }
              ]
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-121",
                  "description": "CWE-121 Stack-based buffer overflow",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-07-24T13:58:35.474Z",
            "orgId": "455daabc-a392-441d-aa46-37d35189897c",
            "shortName": "NCSC.ch"
          },
          "references": [
            {
              "tags": [
                "vendor-advisory"
              ],
              "url": "https://www.loytec.com/support/product-security/advisories/8523-dibt-cve-20260526-0005-stack-buffer-overflow-in-cmd_ipaddr_conflict-low"
            }
          ],
          "solutions": [
            {
              "lang": "en",
              "supportingMedia": [
                {
                  "base64": false,
                  "type": "text/html",
                  "value": "Upgrade to firmware version 8.4.18."
                }
              ],
              "value": "Upgrade to firmware version 8.4.18."
            }
          ],
          "source": {
            "discovery": "EXTERNAL"
          },
          "title": "Loytec LINX firmware: Stack-based Buffer Overflow in cmd_ipaddr_conflict",
          "x_generator": {
            "engine": "Vulnogram 1.0.2"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "455daabc-a392-441d-aa46-37d35189897c",
        "assignerShortName": "NCSC.ch",
        "cveId": "CVE-2026-55728",
        "datePublished": "2026-07-24T13:58:35.474Z",
        "dateReserved": "2026-06-17T09:48:05.267Z",
        "dateUpdated": "2026-07-24T14:56:40.020Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}

FKIE_CVE-2026-55728

Vulnerability from fkie_nvd - Published: 2026-07-24 15:18 - Updated: 2026-07-27 20:32

Severity

3.8 (Low) - 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

Summary

References

	URL	Tags
	vulnerability@ncsc.ch	https://www.loytec.com/support/product-security/advisories/8523-dibt-cve-20260526-0005-stack-buffer-overflow-in-cmd_ipaddr_conflict-low

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "LIP-ME20xC",
          "vendor": "Loytec",
          "versions": [
            {
              "lessThanOrEqual": "8.4.16",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "L-INX",
          "vendor": "Loytec",
          "versions": [
            {
              "lessThanOrEqual": "8.4.16",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "L-GATE",
          "vendor": "Loytec",
          "versions": [
            {
              "lessThanOrEqual": "8.4.16",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "L-ROC",
          "vendor": "Loytec",
          "versions": [
            {
              "lessThanOrEqual": "8.4.16",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "L-IOB",
          "vendor": "Loytec",
          "versions": [
            {
              "lessThanOrEqual": "8.4.16",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "L-DALI",
          "vendor": "Loytec",
          "versions": [
            {
              "lessThanOrEqual": "8.4.16",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "L-VIS",
          "vendor": "Loytec",
          "versions": [
            {
              "lessThanOrEqual": "8.4.16",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "L-PAD",
          "vendor": "Loytec",
          "versions": [
            {
              "lessThanOrEqual": "8.4.16",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "vulnerability@ncsc.ch"
    }
  ],
  "cveTags": [],
  "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."
    }
  ],
  "id": "CVE-2026-55728",
  "lastModified": "2026-07-27T20:32:11.620",
  "metrics": {
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "PRESENT",
          "attackVector": "LOCAL",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 3.8,
          "baseSeverity": "LOW",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "UNREPORTED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "HIGH",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "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/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",
          "version": "4.0",
          "vulnAvailabilityImpact": "LOW",
          "vulnConfidentialityImpact": "HIGH",
          "vulnIntegrityImpact": "HIGH",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "vulnerability@ncsc.ch",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-55728",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-07-24T14:55:52.913648Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-07-24T15:18:30.950",
  "references": [
    {
      "source": "vulnerability@ncsc.ch",
      "url": "https://www.loytec.com/support/product-security/advisories/8523-dibt-cve-20260526-0005-stack-buffer-overflow-in-cmd_ipaddr_conflict-low"
    }
  ],
  "sourceIdentifier": "vulnerability@ncsc.ch",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-121"
        }
      ],
      "source": "vulnerability@ncsc.ch",
      "type": "Secondary"
    }
  ]
}

GHSA-R7G9-R28W-W2PQ

Vulnerability from github – Published: 2026-07-24 15:33 – Updated: 2026-07-24 15:33

Details

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.

Severity

3.8 (Low)


                  
                    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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-55728"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-121"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-24T15:18:30Z",
    "severity": "LOW"
  },
  "details": "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.",
  "id": "GHSA-r7g9-r28w-w2pq",
  "modified": "2026-07-24T15:33:02Z",
  "published": "2026-07-24T15:33:02Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-55728"
    },
    {
      "type": "WEB",
      "url": "https://www.loytec.com/support/product-security/advisories/8523-dibt-cve-20260526-0005-stack-buffer-overflow-in-cmd_ipaddr_conflict-low"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "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/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",
      "type": "CVSS_V4"
    }
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

Publication & reservation Sightings KEV catalogs Other timestamps

Loading timeline…

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2026-55728 (GCVE-0-2026-55728)

FKIE_CVE-2026-55728

GHSA-R7G9-R28W-W2PQ

Tags

Sightings

Nomenclature

Vulnerability timeline

Related by attack behaviour