Vulnerability-Lookup

CVE-2026-81576 (GCVE-0-2026-81576)

Vulnerability from cvelistv5 – Published: 2026-08-27 07:14 – Updated: 2026-08-27 13:13

Title

Improper Authentication of Session Handles

Summary

If configured as a server, CodeMeter Runtime before versions 8.41a and 9.10 issues handles per connection and relies on a cryptographically weak SID as sole authenticator. An attacker can brute-force the SID, recover another session's handle number, and read license information belonging to another handle.

Severity

7.7 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-27 13:10 UTC

CWE

CWE-639 - Authorization bypass through User-Controlled key

Assigner

wibu ENISA root

References

1 reference

URL	Tags
https://cdn.wibu.com/fileadmin/wibu_downloads/sec…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version	CPE status
wibu-systems-ag	codemeter-runtime	Affected: 9.00 , < 9.10 (custom) Affected: 8.00 , < 8.41a (custom) Affected: 7.00 Affected: 6.00 cpe:2.3:a:wibu-systems-ag:codemeter-runtime:::::::: cpe:2.3:a:wibu-systems-ag:codemeter-runtime:::::::: cpe:2.3:a:wibu-systems-ag:codemeter-runtime:7.00:::::::* cpe:2.3:a:wibu-systems-ag:codemeter-runtime:6.00:::::::*

Date Public

2026-08-25 13:00

Credits

Andrew Teylu of Vector Informatik GmbH

Show details on NVD website

JSON

To clipboard

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2NGA003144

Vulnerability from csaf_abb - Published: 2026-09-09 00:30 - Updated: 2026-09-09 00:30

Summary

ABB AbilityTM zenon Security Risk Due to High-Severity Vulnerabilities in WIBU CodeMeter Runtime

Scope

5 vulnerabilities in this advisory, including CVE-2026-81576.

CVE-2026-81576

7.7 (High)


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

Known affected: 1 product

Open the full advisory

3ADR011572

Vulnerability from csaf_abb - Published: 2026-09-03 00:30 - Updated: 2026-09-03 00:30

Summary

Automation Builder, Drive Application Builder, Virtual Drive, Virtual DrivePlus Impacted by multiple vulnerabilities in Wibu CodeMeter

Scope

5 vulnerabilities in this advisory, including CVE-2026-81576.

CVE-2026-81576

If configured as a server, CodeMeter Runtime issues handles per connection and relies on a cryptographically weak SID as sole authenticator. An attacker can brute-force the SID, recover another session's handle number, and read license information belonging to another handle. CodeMeter Runtime is only affected by the vulnerabilities listed below if it is configured as a server. This is not the default. To verify the setting, check the profiling value IsNetworkServer: - IsNetworkServer=1: configured as a server (affected). - IsNetworkServer=0: not configured as a server

7.7 (High)


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

Fixed: 1 product Known affected: 4 products

Open the full advisory

3BHS973333

Vulnerability from csaf_abb - Published: 2026-09-10 00:30 - Updated: 2026-09-10 00:30

Summary

AC 800PEC, AC 800PEC ARM, AC 800PEC Tool, Control Terminal (xCT) and AC 800PEC Tool Cheetah Impacted by multiple vulnerabilities in Wibu CodeMeter

Scope

5 vulnerabilities in this advisory, including CVE-2026-81576.

CVE-2026-81576

7.7 (High)


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

Fixed: 1 product Known affected: 5 products

Open the full advisory

FKIE_CVE-2026-81576

Vulnerability from fkie_nvd - Published: 2026-08-27 10:16 - Updated: 2026-09-01 20:56

Severity

7.7 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

Summary

References

	URL	Tags
	2fc02b1f-71e7-4514-a878-169626f68903	https://cdn.wibu.com/fileadmin/wibu_downloads/security_advisories/AdvisoryWIBU-103401.pdf

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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GHSA-GJ9J-5PFX-GC7P

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

Details

Severity

7.7 (High)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-81576"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-639"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-27T10:16:40Z",
    "severity": "HIGH"
  },
  "details": "If configured as a server, CodeMeter Runtime before versions 8.41a and 9.10 issues handles per connection and relies on a cryptographically weak\nSID as sole authenticator. An attacker can brute-force the SID, recover another session\u0027s handle number, and read\nlicense information belonging to another handle.",
  "id": "GHSA-gj9j-5pfx-gc7p",
  "modified": "2026-08-27T12:30:26Z",
  "published": "2026-08-27T12:30:26Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-81576"
    },
    {
      "type": "WEB",
      "url": "https://cdn.wibu.com/fileadmin/wibu_downloads/security_advisories/AdvisoryWIBU-103401.pdf"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

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

Scope

5 vulnerabilities in this advisory, including CVE-2026-81576.

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

Known affected: 1 product

Open the full advisory

SCA-2026-0011

Vulnerability from csaf_sick - Published: 2026-09-04 13:00 - Updated: 2026-09-04 13:00

Summary

Vulnerabilities in Wibu Systems CodeMeter Runtime Affect Multiple SICK Products

Scope

5 vulnerabilities in this advisory, including CVE-2026-81576.

CVE-2026-81576

7.7 (High)


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

Known affected: 14 products

Open the full advisory

VDE-2026-091

Vulnerability from csaf_trumpfsecokg - Published: 2026-09-15 07:00 - Updated: 2026-09-15 07:00

Summary

TRUMPF: Multiple products affected by Wibu CodeMeter vulnerabilities

Scope

5 vulnerabilities in this advisory, including CVE-2026-81576.

CVE-2026-81576

7.7 (High)


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

Fixed: 38 products Known affected: 76 products

Open the full advisory

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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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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.

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CVE-2026-81576 (GCVE-0-2026-81576)

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