CVE-2018-3989 is a kernel memory disclosure vulnerability in the 0x8200E804 IOCTL handler of WIBU-SYSTEMS WibuKey.sys Version 6.40 (Build 2400), affecting WibuKey installations on Microsoft Windows. A low-privileged local attacker can exploit this by sending a specially crafted IRP request, leading to the disclosure of sensitive kernel memory. While rated Medium severity (CVSS 5.5), its EPSS score is very low, suggesting minimal exploitability in the wild. There is no public exploit code available (Metasploit, Nuclei, ExploitDB), and it is not listed in CISA's KEV catalog, indicating it's not actively exploited. Despite this, it has garnered some community discussion and media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
6.40CPE matchmatch criteria | cpe:2.3:a:wibu:wibukey:6.40:*:*:*:*:*:*:* |
CVSS version used by this source: 3.0
CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.