CVE-2026-81581: CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer in wibu-systems-ag wibukey
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).
CVE-2026-81581: CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer in wibu-systems-ag wibukey
Description
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).
CVSS v3.1
Score 8.8high
Weaknesses
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- wibu
- Date Reserved
- 2026-08-27T07:36:03.335Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a9001f8acd9273b49109411
Added to database: 08/27/2026, 09:23:04 UTC
Last updated: 08/27/2026, 13:37:11 UTC
Views: 8
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