NCSC-2026-0333

Vulnerability from csaf_ncscnl - Published: 2026-08-28 11:25 - Updated: 2026-08-28 11:25
Summary
Kwetsbaarheden verholpen in CodeMeter Runtime van Wibu-Systems
Notes
The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this page to enhance access to its information and security advisories. The use of this security advisory is subject to the following terms and conditions: NCSC-NL makes every reasonable effort to ensure that the content of this page is kept up to date, and that it is accurate and complete. Nevertheless, NCSC-NL cannot entirely rule out the possibility of errors, and therefore cannot give any warranty in respect of its completeness, accuracy or continuous keeping up-to-date. The information contained in this security advisory is intended solely for the purpose of providing general information to professional users. No rights can be derived from the information provided therein. NCSC-NL and the Kingdom of the Netherlands assume no legal liability or responsibility for any damage resulting from either the use or inability of use of this security advisory. This includes damage resulting from the inaccuracy of incompleteness of the information contained in the advisory. This security advisory is subject to Dutch law. All disputes related to or arising from the use of this advisory will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings.
Feiten: Wibu-Systems heeft meerdere kwetsbaarheden verholpen in CodeMeter Runtime.
Interpretaties: De kwetsbaarheden bevinden zich in verschillende onderdelen van CodeMeter Runtime, met name in versies voor 8.41a en 9.10. Een lokale aanvaller kan misbruik maken van onjuiste verificatie van NTFS reparse points bij het aanmaken van tijdelijke bestanden door cmu.exe, wat kan leiden tot het verwijderen van willekeurige systeembestanden met System-privileges en daarmee lokale privilege-escalatie. Daarnaast bevat de configuratie command handler een fout waardoor netwerkrestricties niet correct worden afgedwongen, wat een aanvaller op afstand in staat stelt om ongeautoriseerde toegang te verkrijgen tot gevoelige configuratiegegevens en controle over de WebAdmin interface. Verder is er een input sanitization probleem in de logger module, waardoor format specifiers kunnen worden geïnjecteerd, wat kan leiden tot crashes en mogelijk informatielekken, zowel lokaal als op afstand, vooral in combinatie met CVE-2026-81573. Ook ontbreekt er correcte bounds checking op de data length in opcode 0x5e requests, wat een segmentation fault kan veroorzaken en de stabiliteit van de servercomponent kan beïnvloeden. Ten slotte wordt een zwakke SID gebruikt voor authenticatie, waardoor brute-force aanvallen mogelijk zijn om toegang te krijgen tot sessiehandles en daarmee tot licentie-informatie van andere sessies.
Oplossingen: Wibu-Systems heeft updates uitgebracht om deze kwetsbaarheden in CodeMeter Runtime te verhelpen. Zie bijgevoegde referenties voor meer informatie.
Kans: medium
Schade: high
CWE-59: Improper Link Resolution Before File Access ('Link Following')
CWE-125: Out-of-bounds Read
CWE-130: Improper Handling of Length Parameter Inconsistency
CWE-134: Use of Externally-Controlled Format String
CWE-377: Insecure Temporary File
CWE-639: Authorization Bypass Through User-Controlled Key
CVE-2026-81572

CodeMeter Runtime versions 8.40 to before 8.41a and 9.00 to before 9.10 contain a vulnerability involving predictable temporary files and improper NTFS reparse point checks, enabling local attackers to delete files with System privileges and escalate privileges.

7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Affected products
Product Identifier Version Remediation
vers:unknown/*
Wibu Systems / CodeMeter Runtime
 vers:unknown/*
CVE-2026-81573

CodeMeter Runtime versions before 8.41a or 9.10 configured as a server have a vulnerability in the configuration command handler that allows remote attackers to bypass network-origin restrictions and access sensitive configuration data.

8.6 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L
Affected products
Product Identifier Version Remediation
vers:unknown/*
Wibu Systems / CodeMeter Runtime
 vers:unknown/*
CVE-2026-81574

CodeMeter Runtime versions prior to 8.41a and 9.10 contain an input sanitization vulnerability in the logger that permits format string injection, causing crashes and potential sensitive data exposure when exploited locally or remotely with CVE-2026-81573.

8.2 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
CWE-134 - Use of Externally-Controlled Format String
Affected products
Product Identifier Version Remediation
vers:unknown/*
Wibu Systems / CodeMeter Runtime
 vers:unknown/*
CVE-2026-81575

CodeMeter Runtime versions prior to 8.41a and 9.10, when operating as a server, are susceptible to a segmentation fault crash caused by inadequate bounds checking on data length in opcode 0x5e requests.

7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-130 - Improper Handling of Length Parameter Inconsistency
Affected products
Product Identifier Version Remediation
vers:unknown/*
Wibu Systems / CodeMeter Runtime
 vers:unknown/*
CVE-2026-81576

CodeMeter Runtime versions before 8.41a and 9.10, when configured as a server, use a weak SID for authentication, enabling attackers to brute-force the SID and access other sessions' license information.

7.7 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
CWE-639 - Authorization Bypass Through User-Controlled Key
Affected products
Product Identifier Version Remediation
vers:unknown/*
Wibu Systems / CodeMeter Runtime
 vers:unknown/*
References
To clipboard 

{
  "document": {
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "tlp": {
        "label": "WHITE"
      }
    },
    "lang": "nl",
    "notes": [
      {
        "category": "legal_disclaimer",
        "text": "The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this page to enhance access to its information and security advisories. The use of this security advisory is subject to the following terms and conditions:\n\n    NCSC-NL makes every reasonable effort to ensure that the content of this page is kept up to date, and that it is accurate and complete. Nevertheless, NCSC-NL cannot entirely rule out the possibility of errors, and therefore cannot give any warranty in respect of its completeness, accuracy or continuous keeping up-to-date. The information contained in this security advisory is intended solely for the purpose of providing general information to professional users. No rights can be derived from the information provided therein.\n\n    NCSC-NL and the Kingdom of the Netherlands assume no legal liability or responsibility for any damage resulting from either the use or inability of use of this security advisory. This includes damage resulting from the inaccuracy of incompleteness of the information contained in the advisory.\n    This security advisory is subject to Dutch law. All disputes related to or arising from the use of this advisory will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings."
      },
      {
        "category": "description",
        "text": "Wibu-Systems heeft meerdere kwetsbaarheden verholpen in CodeMeter Runtime.",
        "title": "Feiten"
      },
      {
        "category": "description",
        "text": "De kwetsbaarheden bevinden zich in verschillende onderdelen van CodeMeter Runtime, met name in versies voor 8.41a en 9.10. Een lokale aanvaller kan misbruik maken van onjuiste verificatie van NTFS reparse points bij het aanmaken van tijdelijke bestanden door cmu.exe, wat kan leiden tot het verwijderen van willekeurige systeembestanden met System-privileges en daarmee lokale privilege-escalatie.\n\nDaarnaast bevat de configuratie command handler een fout waardoor netwerkrestricties niet correct worden afgedwongen, wat een aanvaller op afstand in staat stelt om ongeautoriseerde toegang te verkrijgen tot gevoelige configuratiegegevens en controle over de WebAdmin interface. Verder is er een input sanitization probleem in de logger module, waardoor format specifiers kunnen worden ge\u00efnjecteerd, wat kan leiden tot crashes en mogelijk informatielekken, zowel lokaal als op afstand, vooral in combinatie met CVE-2026-81573. Ook ontbreekt er correcte bounds checking op de data length in opcode 0x5e requests, wat een segmentation fault kan veroorzaken en de stabiliteit van de servercomponent kan be\u00efnvloeden. Ten slotte wordt een zwakke SID gebruikt voor authenticatie, waardoor brute-force aanvallen mogelijk zijn om toegang te krijgen tot sessiehandles en daarmee tot licentie-informatie van andere sessies.",
        "title": "Interpretaties"
      },
      {
        "category": "description",
        "text": "Wibu-Systems heeft updates uitgebracht om deze kwetsbaarheden in CodeMeter Runtime te verhelpen. Zie bijgevoegde referenties voor meer informatie.",
        "title": "Oplossingen"
      },
      {
        "category": "general",
        "text": "medium",
        "title": "Kans"
      },
      {
        "category": "general",
        "text": "high",
        "title": "Schade"
      },
      {
        "category": "general",
        "text": "Improper Link Resolution Before File Access (\u0027Link Following\u0027)",
        "title": "CWE-59"
      },
      {
        "category": "general",
        "text": "Out-of-bounds Read",
        "title": "CWE-125"
      },
      {
        "category": "general",
        "text": "Improper Handling of Length Parameter Inconsistency",
        "title": "CWE-130"
      },
      {
        "category": "general",
        "text": "Use of Externally-Controlled Format String",
        "title": "CWE-134"
      },
      {
        "category": "general",
        "text": "Insecure Temporary File",
        "title": "CWE-377"
      },
      {
        "category": "general",
        "text": "Authorization Bypass Through User-Controlled Key",
        "title": "CWE-639"
      }
    ],
    "publisher": {
      "category": "coordinator",
      "contact_details": "cert@ncsc.nl",
      "name": "Nationaal Cyber Security Centrum",
      "namespace": "https://www.ncsc.nl/"
    },
    "references": [
      {
        "category": "external",
        "summary": "Reference",
        "url": "https://www.wibu.com/de/support/security-advisories/wibu-103081.html"
      },
      {
        "category": "external",
        "summary": "Reference",
        "url": "https://www.wibu.com/de/support/security-advisories/wibu-103401.html"
      }
    ],
    "title": "Kwetsbaarheden verholpen in CodeMeter Runtime van Wibu-Systems",
    "tracking": {
      "current_release_date": "2026-08-28T11:25:53.492668Z",
      "generator": {
        "date": "2025-08-04T16:30:00Z",
        "engine": {
          "name": "V.A.",
          "version": "1.3"
        }
      },
      "id": "NCSC-2026-0333",
      "initial_release_date": "2026-08-28T11:25:53.492668Z",
      "revision_history": [
        {
          "date": "2026-08-28T11:25:53.492668Z",
          "number": "1.0.0",
          "summary": "Initiele versie"
        }
      ],
      "status": "final",
      "version": "1.0.0"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "vers:unknown/*",
                "product": {
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  "vulnerabilities": [
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      "cve": "CVE-2026-81572",
      "cwe": {
        "id": "CWE-59",
        "name": "Improper Link Resolution Before File Access (\u0027Link Following\u0027)"
      },
      "notes": [
        {
          "category": "other",
          "text": "Improper Link Resolution Before File Access (\u0027Link Following\u0027)",
          "title": "CWE-59"
        },
        {
          "category": "description",
          "text": "CodeMeter Runtime versions 8.40 to before 8.41a and 9.00 to before 9.10 contain a vulnerability involving predictable temporary files and improper NTFS reparse point checks, enabling local attackers to delete files with System privileges and escalate privileges.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1"
        ]
      },
      "references": [
        {
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          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-81572.json"
        }
      ],
      "scores": [
        {
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    },
    {
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      "notes": [
        {
          "category": "description",
          "text": "CodeMeter Runtime versions before 8.41a or 9.10 configured as a server have a vulnerability in the configuration command handler that allows remote attackers to bypass network-origin restrictions and access sensitive configuration data.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1"
        ]
      },
      "references": [
        {
          "category": "self",
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          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-81573.json"
        }
      ],
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      ],
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    },
    {
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        "name": "Use of Externally-Controlled Format String"
      },
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        {
          "category": "other",
          "text": "Use of Externally-Controlled Format String",
          "title": "CWE-134"
        },
        {
          "category": "description",
          "text": "CodeMeter Runtime versions prior to 8.41a and 9.10 contain an input sanitization vulnerability in the logger that permits format string injection, causing crashes and potential sensitive data exposure when exploited locally or remotely with CVE-2026-81573.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
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        ]
      },
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          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-81574.json"
        }
      ],
      "scores": [
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    },
    {
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        "name": "Improper Handling of Length Parameter Inconsistency"
      },
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        {
          "category": "other",
          "text": "Improper Handling of Length Parameter Inconsistency",
          "title": "CWE-130"
        },
        {
          "category": "description",
          "text": "CodeMeter Runtime versions prior to 8.41a and 9.10, when operating as a server, are susceptible to a segmentation fault crash caused by inadequate bounds checking on data length in opcode 0x5e requests.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1"
        ]
      },
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        {
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          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-81575.json"
        }
      ],
      "scores": [
        {
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          },
          "products": [
            "CSAFPID-1"
          ]
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      ],
      "title": "CVE-2026-81575"
    },
    {
      "cve": "CVE-2026-81576",
      "cwe": {
        "id": "CWE-639",
        "name": "Authorization Bypass Through User-Controlled Key"
      },
      "notes": [
        {
          "category": "other",
          "text": "Authorization Bypass Through User-Controlled Key",
          "title": "CWE-639"
        },
        {
          "category": "description",
          "text": "CodeMeter Runtime versions before 8.41a and 9.10, when configured as a server, use a weak SID for authentication, enabling attackers to brute-force the SID and access other sessions\u0027 license information.",
          "title": "Summary"
        }
      ],
      "product_status": {
        "known_affected": [
          "CSAFPID-1"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-81576 | NCSC-NL Website",
          "url": "https://vulnerabilities.ncsc.nl/csaf/v2/2026/cve-2026-81576.json"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.7,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-1"
          ]
        }
      ],
      "title": "CVE-2026-81576"
    }
  ]
}



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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.