Vulnerability-Lookup

GHSA-C6XR-X2JW-73RP

Vulnerability from github – Published: 2026-08-27 12:30 – Updated: 2026-08-27 12:30

Details

cmu.exe --create-io --file C: creates a predictable temporary file under C:\CM-Stick. The directory and file paths are not properly checked for NTFS reparse points, such as junctions or symbolic links, before file operations are performed. A local attacker can create a junction at the temporary file that points to an arbitrary system path. Because CodeMeter Runtime runs with System privileges, this could allow arbitrary files to be deleted with System privileges and potentially enable local privilege escalation.

Severity

7.8 (High)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2026-81572"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-59"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-27T10:16:39Z",
    "severity": "HIGH"
  },
  "details": "cmu.exe --create-io --file C: creates a predictable temporary file under C:\\CM-Stick. The directory and\nfile paths are not properly checked for NTFS reparse points, such as junctions or symbolic links, before file\noperations are performed. A local attacker can create a junction at the temporary file that points to an arbitrary\nsystem path. Because CodeMeter Runtime runs with System privileges, this could allow arbitrary files to be deleted\nwith System privileges and potentially enable local privilege escalation.",
  "id": "GHSA-c6xr-x2jw-73rp",
  "modified": "2026-08-27T12:30:26Z",
  "published": "2026-08-27T12:30:26Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-81572"
    },
    {
      "type": "WEB",
      "url": "https://cdn.wibu.com/fileadmin/wibu_downloads/security_advisories/AdvisoryWIBU-103081.pdf"
    },
    {
      "type": "WEB",
      "url": "https://shelltrail.com/research/local-privilege-escalation-to-system-in-wibu-systems-codemeter-application"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-81572 (GCVE-0-2026-81572)

Vulnerability from cvelistv5 – Published: 2026-08-27 07:06 – Updated: 2026-08-27 13:36

Title

Local Privilege Escalation in CodeMeter Runtime on Windows

Summary

Severity

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: poc Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-27 13:34 UTC

CWE

CWE-59 - Improper link resolution before file access ('link following')

Assigner

wibu

References

2 references

URL	Tags
https://cdn.wibu.com/fileadmin/wibu_downloads/sec…	vendor-advisory
https://shelltrail.com/research/local-privilege-e…	technical-description

Impacted products

1 product

Vendor	Product	Version
wibu-systems-ag	codemeter-runtime	Affected: 8.40 , < 8.41a (custom) Affected: 9.00 , < 9.10 (custom) cpe:2.3:a:wibu-systems-ag:codemeter-runtime:::windows:::::* cpe:2.3:a:wibu-systems-ag:codemeter-runtime:::windows:::::*

Date Public

2026-08-25 13:00

Credits

Andreas Vikerup of Shelltrail AB

Show details on NVD website

JSON

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  "containers": {
    "adp": [
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        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-81572",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-27T13:34:27.207956Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-08-27T13:36:14.915Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://www.wibu.com/products/codemeter/runtime.html",
          "defaultStatus": "unaffected",
          "platforms": [
            "Windows"
          ],
          "product": "codemeter-runtime",
          "vendor": "wibu-systems-ag",
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              "status": "affected",
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            },
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              "status": "affected",
              "version": "9.00",
              "versionType": "custom"
            }
          ]
        }
      ],
      "cpeApplicability": [
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          "nodes": [
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              "cpeMatch": [
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                  "criteria": "cpe:2.3:a:wibu-systems-ag:codemeter-runtime:*:*:windows:*:*:*:*:*",
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                  "versionStartIncluding": "8.40",
                  "vulnerable": true
                },
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      "metrics": [
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            "baseScore": 7.8,
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            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
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        "orgId": "2fc02b1f-71e7-4514-a878-169626f68903",
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          "url": "https://cdn.wibu.com/fileadmin/wibu_downloads/security_advisories/AdvisoryWIBU-103081.pdf"
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          ],
          "url": "https://shelltrail.com/research/local-privilege-escalation-to-system-in-wibu-systems-codemeter-application"
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}

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.

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.

Action not permitted

GHSA-C6XR-X2JW-73RP

CVE-2026-81572 (GCVE-0-2026-81572)

Tags

Sightings

Nomenclature