Wibu-Systems-AG WibuKey up to 6.70 WibuKey64.sys privileges management

Summaryinfo

A vulnerability classified as very critical was found in Wibu-Systems-AG WibuKey up to 6.70. Affected by this issue is some unknown functionality of the file WibuKey64.sys. The manipulation results in privileges management. This vulnerability is cataloged as CVE-2026-81581. The attack must be initiated from a local position. There is no exploit available.

Detailsinfo

A vulnerability classified as very critical has been found in Wibu-Systems-AG WibuKey up to 6.70. Affected is an unknown function of the file WibuKey64.sys. The manipulation with an unknown input leads to a privileges management vulnerability. CWE is classifying the issue as CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

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).

The advisory is shared for download at cdn.wibu.com. This vulnerability is traded as CVE-2026-81581 since 08/27/2026. The exploitability is told to be easy. The attack needs to be approached locally. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 08/27/2026). The MITRE ATT&CK project declares the attack technique as T1068.

Upgrading to version 6.71 eliminates this vulnerability.

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Productinfo

Vendor

• Wibu-Systems-AG

Name

• WibuKey

Version

• 6.0
• 6.1
• 6.2
• 6.3
• 6.4
• 6.5
• 6.6
• 6.7
• 6.8
• 6.9
• 6.10
• 6.11
• 6.12
• 6.13
• 6.14
• 6.15
• 6.16
• 6.17
• 6.18
• 6.19
• 6.20
• 6.21
• 6.22
• 6.23
• 6.24
• 6.25
• 6.26
• 6.27
• 6.28
• 6.29
• 6.30
• 6.31
• 6.32
• 6.33
• 6.34
• 6.35
• 6.36
• 6.37
• 6.38
• 6.39
• 6.40
• 6.41
• 6.42
• 6.43
• 6.44
• 6.45
• 6.46
• 6.47
• 6.48
• 6.49
• 6.50
• 6.51
• 6.52
• 6.53
• 6.54
• 6.55
• 6.56
• 6.57
• 6.58
• 6.59
• 6.60
• 6.61
• 6.62
• 6.63
• 6.64
• 6.65
• 6.66
• 6.67
• 6.68
• 6.69
• 6.70

CPE 2.3info

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CPE 2.2info

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