How severe is CVE-2018-3989?

CVE-2018-3989 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2018-3989 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-3989?

CVE-2018-3989 affects Wibu Wibukey. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-3989?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2018-3989 published?

CVE-2018-3989 was published on 2019-02-05 and last updated on 2026-06-17.

CVE-2018-3989

CVE-2018-3989 is a medium-severity vulnerability in Wibu Wibukey with a CVSS 3.x base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-908.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
CVSS v2: 2.1
EPSS exploit prediction: 1% (45th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-908
Affected product: Wibu Wibukey
Published: 2019-02-05
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2018-3989?: 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.
How severe is CVE-2018-3989?: CVE-2018-3989 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2018-3989 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-3989?: CVE-2018-3989 affects Wibu Wibukey. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-3989?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-3989 published?: CVE-2018-3989 was published on 2019-02-05 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:wibu:wibukey:6.40:*:*:*:*:*:*:*

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