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Fencer Vulns
critical 9.3

CVE-2018-3990 json

An exploitable pool corruption vulnerability exists in the 0x8200E804 IOCTL handler functionality of WIBU-SYSTEMS WibuKey.sys Version 6.40…

published 2019-02-05 7 y ago modified 2026-06-17 4 mo ago also EUVD-2018-15776

cvss
9.3
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 50%
public exploits
0
none known

Summary

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.

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-19-043-03 updated cvss 9.3

WIBU SYSTEMS AG WibuKey Digital Rights Management (Update D)

  • WIBU-SYSTEMS AG COPA-DATA straton workbench <= 9.2 WIBU-SYSTEMS AG COPA-DATA zenon products <= 7.20 (7.50 and 7.60 may also be affected if WibuKey was installed manually) WIBU-SYSTEMS AG Phoenix Contact MEVIEW3 <= 3.14.25, 3.15.18 WIBU-SYSTEMS AG Siemens SICAM 230 <= 7.20 WIBU-SYSTEMS AG Siemens SIMATIC WinCC OA 3.14 < P025 WIBU-SYSTEMS AG Siemens SIMATIC WinCC OA 3.15 < P018
    +3 more products
    WIBU-SYSTEMS AG Siemens SIMATIC WinCC OA 3.16 < P007 WIBU-SYSTEMS AG Siemens SISHIP EMCS IMAC IPMS WIBU-SYSTEMS AG Sprecher Automation SPRECON-V460 products <= 7.20 (7.50 and 7.60 may also be affected if WibuKey was installed manually)
    affected: fixed in 6.50a winccoa.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

Exploit prediction

0.64% chance of exploitation in the next 30 days, higher than 50% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • talosintelligence.com https://talosintelligence.com/vulnerability_reports/TALOS-2018-0658 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.0 9.3 CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
NVD 3.0 7.8 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.2 AV:L/AC:L/Au:N/C:C/I:C/A:C

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.