CVE-2026-40456 (GCVE-0-2026-40456)

Vulnerability from cvelistv5 – Published: 2026-06-18 10:58 – Updated: 2026-06-18 12:29 X_Open Source
VLAI
Title
OS Command Injection in LMS
Summary
An OS Command Injection vulnerability exists in LMS (LAN Management System) before commit 9fcb4de due to an IP address parameter being passed to the "exec()" function without proper validation, allowing attackers to execute arbitrary operating system commands.
Severity
8.6 (High)
CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Assigner
References
Impacted products
Vendor Product Version
LMS LMS Affected: 0 , < 9fcb4de (git)
Create a notification for this product.
Date Public
2026-06-18 10:58
Credits
Tymoteusz Dominik
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-40456",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-06-18T12:29:33.310001Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-06-18T12:29:40.271Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "LMS",
          "repo": "https://github.com/chilek/lms",
          "vendor": "LMS",
          "versions": [
            {
              "lessThan": "9fcb4de",
              "status": "affected",
              "version": "0",
              "versionType": "git"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Tymoteusz Dominik"
        }
      ],
      "datePublic": "2026-06-18T10:58:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "An OS Command Injection vulnerability exists in LMS (LAN Management System)\u0026nbsp;before commit 9fcb4de due to an IP address parameter being passed to the \"exec()\" function without proper validation, allowing attackers to execute arbitrary operating system commands.\u003cbr\u003e"
            }
          ],
          "value": "An OS Command Injection vulnerability exists in LMS (LAN Management System)\u00a0before commit 9fcb4de due to an IP address parameter being passed to the \"exec()\" function without proper validation, allowing attackers to execute arbitrary operating system commands."
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-88",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-88 OS Command Injection"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "ADJACENT",
            "baseScore": 8.6,
            "baseSeverity": "HIGH",
            "privilegesRequired": "LOW",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "LOW",
            "subIntegrityImpact": "LOW",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-78",
              "description": "CWE-78 Improper Neutralization of Special Elements used in an OS Command (\u0027OS Command Injection\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-18T10:58:51.790Z",
        "orgId": "4bb8329e-dd38-46c1-aafb-9bf32bcb93c6",
        "shortName": "CERT-PL"
      },
      "references": [
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/chilek/lms/commit/9fcb4de19b7d76394898dbc124252b86b07ac0ed"
        },
        {
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://cert.pl/posts/2026/06/CVE-2026-40455"
        },
        {
          "tags": [
            "product"
          ],
          "url": "https://lms.org.pl/"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "tags": [
        "x_open-source"
      ],
      "title": "OS Command Injection in LMS",
      "x_generator": {
        "engine": "Vulnogram 0.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "4bb8329e-dd38-46c1-aafb-9bf32bcb93c6",
    "assignerShortName": "CERT-PL",
    "cveId": "CVE-2026-40456",
    "datePublished": "2026-06-18T10:58:51.790Z",
    "dateReserved": "2026-04-13T09:36:21.532Z",
    "dateUpdated": "2026-06-18T12:29:40.271Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-40456",
      "date": "2026-06-19",
      "epss": "0.00947",
      "percentile": "0.56504"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-40456\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-06-18T12:29:33.310001Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-06-18T12:29:35.613Z\"}}], \"cna\": {\"tags\": [\"x_open-source\"], \"title\": \"OS Command Injection in LMS\", \"source\": {\"discovery\": \"EXTERNAL\"}, \"credits\": [{\"lang\": \"en\", \"type\": \"finder\", \"value\": \"Tymoteusz Dominik\"}], \"impacts\": [{\"capecId\": \"CAPEC-88\", \"descriptions\": [{\"lang\": \"en\", \"value\": \"CAPEC-88 OS Command Injection\"}]}], \"metrics\": [{\"format\": \"CVSS\", \"cvssV4_0\": {\"Safety\": \"NOT_DEFINED\", \"version\": \"4.0\", \"Recovery\": \"NOT_DEFINED\", \"baseScore\": 8.6, \"Automatable\": \"NOT_DEFINED\", \"attackVector\": \"ADJACENT\", \"baseSeverity\": \"HIGH\", \"valueDensity\": \"NOT_DEFINED\", \"vectorString\": \"CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:N\", \"providerUrgency\": \"NOT_DEFINED\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"attackRequirements\": \"NONE\", \"privilegesRequired\": \"LOW\", \"subIntegrityImpact\": \"LOW\", \"vulnIntegrityImpact\": \"HIGH\", \"subAvailabilityImpact\": \"NONE\", \"vulnAvailabilityImpact\": \"HIGH\", \"subConfidentialityImpact\": \"LOW\", \"vulnConfidentialityImpact\": \"HIGH\", \"vulnerabilityResponseEffort\": \"NOT_DEFINED\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}], \"affected\": [{\"repo\": \"https://github.com/chilek/lms\", \"vendor\": \"LMS\", \"product\": \"LMS\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"9fcb4de\", \"versionType\": \"git\"}], \"defaultStatus\": \"unaffected\"}], \"datePublic\": \"2026-06-18T10:58:00.000Z\", \"references\": [{\"url\": \"https://github.com/chilek/lms/commit/9fcb4de19b7d76394898dbc124252b86b07ac0ed\", \"tags\": [\"patch\"]}, {\"url\": \"https://cert.pl/posts/2026/06/CVE-2026-40455\", \"tags\": [\"third-party-advisory\"]}, {\"url\": \"https://lms.org.pl/\", \"tags\": [\"product\"]}], \"x_generator\": {\"engine\": \"Vulnogram 0.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"An OS Command Injection vulnerability exists in LMS (LAN Management System)\\u00a0before commit 9fcb4de due to an IP address parameter being passed to the \\\"exec()\\\" function without proper validation, allowing attackers to execute arbitrary operating system commands.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"An OS Command Injection vulnerability exists in LMS (LAN Management System)\u0026nbsp;before commit 9fcb4de due to an IP address parameter being passed to the \\\"exec()\\\" function without proper validation, allowing attackers to execute arbitrary operating system commands.\u003cbr\u003e\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-78\", \"description\": \"CWE-78 Improper Neutralization of Special Elements used in an OS Command (\u0027OS Command Injection\u0027)\"}]}], \"providerMetadata\": {\"orgId\": \"4bb8329e-dd38-46c1-aafb-9bf32bcb93c6\", \"shortName\": \"CERT-PL\", \"dateUpdated\": \"2026-06-18T10:58:51.790Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-40456\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-06-18T12:29:40.271Z\", \"dateReserved\": \"2026-04-13T09:36:21.532Z\", \"assignerOrgId\": \"4bb8329e-dd38-46c1-aafb-9bf32bcb93c6\", \"datePublished\": \"2026-06-18T10:58:51.790Z\", \"assignerShortName\": \"CERT-PL\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.


Detection rules are retrieved from Rulezet.