Intelligence online17 sources monitored11 actively exploited 7d42 published 24hChecked recently
Vulnerability record

CVE-2026-84854

HighNo known exploitation

Patch status

No official fix confirmed yet

Until a fix ships, follow the vendor's mitigations, limit exposure of affected systems, and watch this record for a patch.

Description

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.

Source: NIST National Vulnerability Database. Official vulnerability data, reproduced as published.

Intelligence timeline

Developments from the last 30 days, newest first.

  1. CVSS scoredUpdate

    CVE-2026-84854 scored CVSS 7.0

    Basis: NIST National Vulnerability Database

  2. Disclosed

    Siemens PSS(R)SINCAL

    Basis: CISA Cybersecurity Advisories (government advisory)

Coverage

HighPatch

Siemens PSS(R)SINCAL

Patch

Apply the vendor's security update for the affected products.

CISA Cybersecurity AdvisoriesCritical infra

References

  • cdn.wibu.com https://cdn.wibu.com/fileadmin/wibu_downloads/security_advisories/AdvisoryWIBU-100065.pdf
  • cert-portal.siemens.com https://cert-portal.siemens.com/productcert/html/ssa-148322.html