CVE-2026-81581CWE-119
CVE-2026-81581
High · published August 27, 2026
What it is
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 record
Technical detail
- CVSS v3.1
- 8.8 · HIGH
- Vector
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- CVSS v4.0
- Not supplied
- EPSS
- 0.00219 · 11.7th percentile
- Weakness
- CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer
- Published
- 2026-08-27T14:16Z
References (1)
EPSS history
Timeline
28 AUG 06:54Z
EPSS moved — → 0%
epss
27 AUG 07:46Z
User input in WibuKey is used (without proper sanitization) to compute the address of a pointer, which can be exploited to let the user point to any storage, to which Windows responds with a denial of service.
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