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  4. CVE 2026 84854 out of bound write on wibukey for windows
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Back to active CVEs
High · CVSS 7.0CVE-2026-84854

Out of Bound Write on WibuKey for WindowsCVE-2026-84854

Answer in brief

CVE-2026-84854 records a High severity (CVSS 7.0) vulnerability in Out of Bound Write on WibuKey for Windows. The current sources do not mark it as known exploited. The current feed maps wibu-systems-ag/wibukey (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 6, 2026Updated Oct 6, 2026Source checked Oct 6, 2026First seen by HOL Oct 6, 2026Material review Oct 6, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 7.0
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 7.0. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps wibu-systems-ag/wibukey (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
wibu-systems-ag/wibukeygeneric>=0 <6.726.72

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for wibu-systems-ag/wibukey.
  2. 2Review the reported fix. Update wibu-systems-ag/wibukey to 6.72 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Oct 6, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 6, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 6, 2026

Sources and claim methodology

  • Source referencecdn.wibu.com
Upstream source 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.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Insecure deserialization in the TrueLayer Magento 2 pluginSame generic ecosystem
  • Authenticated RCE via render-components Entry Type overridesSame generic ecosystem
  • Heap Buffer Overflow in GNU Aspell's prezip utilitySame generic ecosystem
  • Out-of-bounds Read in GNU AspellSame generic ecosystem
  • Integer Truncation Leading to Heap Corruption in GNU AspellSame generic ecosystem
  • Open Redirect in PingGateway Fragment FilterSame generic ecosystem

Record context

Vulnerability class
Memory Corruption
EPSS
Not reported
CWE IDs
CWE-787
Source
CVE List V5
Source checked
Oct 6, 2026
References
1 linked source
Open source record