TI-2018-02957 Aliases CVE-2018-3989 GHSA-r77m-fr9v-2jvr

An exploitable kernel memory disclosure vulnerability exists in the 0x8200E804 IOCTL…

LOW 26CWE-908Published 2019-02-05 · Updated 2024-08-05

Key facts

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

Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-908 and the CVSS impact.

Summary

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.

Why it matters now

EPSS 0.0057 47th 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

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:a:wibu:wibukey:6.40:::::::*	6.40	Vulnerable	Wibu
cpe:2.3:o:microsoft:windows:-:::::::*	not specified by NVD	Running on	Microsoft

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

2026-10-02 Threatist record created from CVE-2018-3989
2026-10-03 Alias added: GHSA-r77m-fr9v-2jvr

References

Exploit 1

https://talosintelligence.com/vulnerability_reports/TALOS-2018-0657

Advisory 2

Other 1

https://cert-portal.siemens.com/productcert/pdf/ssa-902727.pdf

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-2018-02958 An exploitable pool corruption vulnerability exists in the 0x8200E804 IOCTL handler… CVSS 3.0CRITICAL 9.3
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-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