CVE-2026-84854Out of Bound Write on WibuKey for Windows
Updated under an hour ago ()
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It affects wibu-systems-ag wibukey and 3 other products. Add what you run to find out whether that includes you.
EPSS puts the chance of exploitation in the next 30 days at 0.10%, higher than 1% of scored CVEs.
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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.
- CVSS
- 7.0 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-787
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- 0.10% (percentile 1)
- Assigned by
- wibu
- NVD analysis
- Deferred
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
wibu-systems-ag wibukey wibu_systems:wibukey (from the name) | before 6.72 | CNA record |
Siemens PSS(R)SINCAL V21.5 siemens:pss_r_sincal_v21.5 (from the name) | all versions | CISA ADP |
Siemens PSS(R)SINCAL V22.0 siemens:pss_r_sincal_v22.0 (from the name) | all versions | CISA ADP |
Siemens PSS(R)SINCAL V22.5 siemens:pss_r_sincal_v22.5 (from the name) | before V22.5 Update 5 | CISA ADP |
References
- https://cdn.wibu.com/fileadmin/wibu_downloads/security_advisories/AdvisoryWIBU-100065.pdfvendor-advisory
- https://cert-portal.siemens.com/productcert/html/ssa-148322.html
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.