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TI-2018-02958 Aliases CVE-2018-3990GHSA-gpw6-98jf-9gjm

An exploitable pool corruption vulnerability exists in the 0x8200E804 IOCTL handler…

Priority MEDIUM 41CWE-119Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.0 · CNA. Fix status from CNA. Impact type from CWE-119 and the CVSS impact.

Summary

An exploitable pool corruption vulnerability exists in the 0x8200E804 IOCTL handler functionality of WIBU-SYSTEMS WibuKey.sys Version 6.40 (Build 2400). A specially crafted IRP request can cause a buffer overflow, resulting in kernel memory corruption and, potentially, privilege escalation. An attacker can send an IRP request to trigger this vulnerability.

Why it matters now

EPSS 0.00636 50th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:wibu:wibukey:6.40:*:*:*:*:*:*:*6.40VulnerableWibu
cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*not specified by NVDRunning onMicrosoft
  • cpe:2.3:a:wibu:wibukey:6.40:*:*:*:*:*:*:* Versions 6.40 Vulnerable ·Wibu
  • cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-3990
  2. 2026-10-03 Alias added: GHSA-gpw6-98jf-9gjm
  3. 2026-10-25 EPSS moved to the 50th–90th percentile

References

Exploit 1

Advisory 2

Other 1

  • TI-2021-22426 WibuKey Runtime 6.51 - 'WkSvW32.exe' Unquoted Service Path CVSS 4.0HIGH 8.5
  • TI-2018-02959 An exploitable heap overflow vulnerability exists in the WkbProgramLow function of… CVSS 3.0CRITICAL 10.0
  • TI-2024-30278 An issue was discovered in WibuKey64.sys in WIBU-SYSTEMS WibuKey before v6.70 and fixed… CVSS 3.1HIGH 8.8
  • TI-2018-02957 An exploitable kernel memory disclosure vulnerability exists in the 0x8200E804 IOCTL… CVSS 3.0MEDIUM 5.5
  • TI-2024-30279 An issue was discovered in WibuKey64.sys in WIBU-SYSTEMS WibuKey before v6.70 and fixed… CVSS 3.1MEDIUM 5.5

Sources

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