How severe is CVE-2018-3990?

CVE-2018-3990 has a CVSS 3.x base score of 9.3, rated critical severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-3990 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-3990?

CVE-2018-3990 affects Wibu Wibukey. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-3990?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2018-3990 published?

CVE-2018-3990 was published on 2019-02-05 and last updated on 2026-06-17.

CVE-2018-3990

CVE-2018-3990 is a critical-severity vulnerability in Wibu Wibukey with a CVSS 3.x base score of 9.3. 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-119.

Key facts

Severity: Critical (CVSS 3.x base score 9.3)
CVSS v2: 7.2
EPSS exploit prediction: 1% (48th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Wibu Wibukey
Published: 2019-02-05
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2018-3990?: 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.
How severe is CVE-2018-3990?: CVE-2018-3990 has a CVSS 3.x base score of 9.3, rated critical severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-3990 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-3990?: CVE-2018-3990 affects Wibu Wibukey. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-3990?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2018-3990 published?: CVE-2018-3990 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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