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TI-2026-56286 Aliases CVE-2026-81581GHSA-m4jv-48jv-489g

Memory corruption in wibu-systems-ag wibukey

Priority LOW 39CWE-119Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-119 and the CVSS impact.

Summary

Improper validation of memory boundaries in WibuKey64.sys of WibuKey up to 6.70 for Windows can be exploited by an attacker by setting the pointers outside the scope of the program. This usually results in a denial of service, yet we cannot rule out the possibility of exploits that can cause Remote Code Execution and Privilege Escalation (since the driver runs with system privileges).

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00219 12th percentileScored 2026-11-07
Fix Fixed wibukey (wibu-systems-ag): 6.71

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
wibu-systems-agwibukeybefore 6.716.71Patch availableCNA
  • wibukey Vendorwibu-systems-ag Affected before 6.71 Fixed in 6.71 Patch available CNA

Remediation

  • Fix · CNA wibukey (wibu-systems-ag) Fixed in 6.71

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    wibu-systems-ag wibukey 6.71

    2 records Highest priority Priority LOW 2 LOW

    Other records, highest priority first

    • TI-2026-56285 An untrusted Pointer Dereference can be exploited to escalate privileges by an unprivileged user on WindowsPriority LOW 39
    Show all 2 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-81581
  2. 2026-10-03 Alias added: GHSA-m4jv-48jv-489g

References

Advisory 1

  • TI-2026-56280 Improper Access Control in Local-Only Configuration Commands CVSS 3.1HIGH 8.6
  • TI-2026-56281 Format String Vulnerability in Logger CVSS 3.1HIGH 8.2
  • TI-2026-56285 An untrusted Pointer Dereference can be exploited to escalate privileges by an unprivileged user on Windows CVSS 3.1HIGH 8.8
  • TI-2026-56279 Local Privilege Escalation in CodeMeter Runtime on Windows CVSS 3.1HIGH 7.8
  • TI-2026-56283 Improper Authentication of Session Handles CVSS 3.1HIGH 7.7
  • TI-2026-56282 Missing Sanity Checks for Buffer Lengths CVSS 3.1HIGH 7.5
See all 7 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences