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Vulnerability record · CVE-2018-3989 · published 5 February 2019

CVE-2018-3989: Wibukey use of uninitialized resource vulnerability

Wibu · Wibukey

An exploitable kernel memory disclosure 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 the driver to return uninitialized memory, resulting in kernel memory disclosure. An attacker can send an IRP request to trigger this vulnerability.

5.5 CVSS 3.0 Medium EPSS 0.57% · top 55.0% CWE-908 · Use of uninitialized resource
5.5CVSS 3.0 base score, v2 2.1
0.57%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
10References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

An exploitable kernel memory disclosure 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 the driver to return uninitialized memory, resulting in kernel memory disclosure. An attacker can send an IRP request to trigger this vulnerability.

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.securityfocus.com/bid/107005 Third Party AdvisoryVDB Entry
https://cert-portal.siemens.com/productcert/pdf/ssa-760124.pdf Third Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-844562.pdf Third Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-902727.pdf
https://talosintelligence.com/vulnerability_reports/TALOS-2018-0657 ExploitThird Party Advisory
http://www.securityfocus.com/bid/107005 Third Party AdvisoryVDB Entry
https://cert-portal.siemens.com/productcert/pdf/ssa-760124.pdf Third Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-844562.pdf Third Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-902727.pdf
https://talosintelligence.com/vulnerability_reports/TALOS-2018-0657 ExploitThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2018-3989), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.