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Vulnerabilities

Vulnerability · CVE-2026-84854

Out of Bound Write on WibuKey for Windows

Published Oct 6, 2026 · catalog updated Oct 15, 2026 · Out of Bound Write

Check if you run it

No confirmed exploitation is on record for CVE-2026-84854. EPSS is 0.10%. Act only if a listed version of Out of Bound Write is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Out of Bound Write).
  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High7.0
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.10%
Remediation
Advisory link
Affected products
vendor wibu-systems-ag wibukey

In the WibuKey driver for Windows below Version 6.72, insufficient validation of user input when calculating the size of a kernel buffer could cause small amounts of data to be written outside the intended kernel buffer. This can lead to a system crash. Under unfavorable circumstances, adjacent kernel memory may be modified.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor wibu-systems-ag wibukeyversion unspecified

How to fix CVE-2026-84854

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-84854. EPSS is 0.10%. Act only if a listed version of Out of Bound Write is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-787: Out-of-bounds Write. EPSS 0.10%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Windows security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 6, 2026 · NIST NVD

    Detected

    In the WibuKey driver for Windows below Version 6.72, insufficient validation of user input when calculating the size of a kernel buffer could cause small amounts of data to be written outside the intended kernel buffer. This can lead to a system crash. Under unfavorable circumstances, adjacent kernel memory may be modified.

  2. Oct 15, 2026 · NIST NVD

    Updated

    In the WibuKey driver for Windows below Version 6.72, insufficient validation of user input when calculating the size of a kernel buffer could cause small amounts of data to be written outside the intended kernel buffer. This can lead to a system crash. Under unfavorable circumstances, adjacent kernel memory may be modified.

Sources

  • CIRCL Vulnerability LookupVulnerability recordCVE-2026-84854

    In the WibuKey driver for Windows below Version 6.72, insufficient validation of user input when calculating the size of a kernel buffer could cause small amounts of data to be written outside the intended kernel buffer. This can lead to a system crash. Under unfavorable circumst

    vulnerability.circl.lu
  • CVE.orgVulnerability recordCVE-2026-84854

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-84854

    30-day exploitation probability 0.1%

    first.org
  • NIST NVDVulnerability recordCVE-2026-84854

    In the WibuKey driver for Windows below Version 6.72, insufficient validation of user input when calculating the size of a kernel buffer could cause small amounts of data to be written outside the intended kernel buffer. This can lead to a system crash. Under unfavorable circumst

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.