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CISA advisoryVulnerabilitiesPublished Oct 22, 2026

Siemens PSS(R)SINCAL

Updated 3 hours ago ()

View CSAF Summary PSS(R)SINCAL uses WibuKey third-party product that contains an out-of-bounds write vulnerability. An attacker could exploit this vulnerability to cause a system crash, resulting in a denial-of-service condition. This affects PSS SINCAL only when configured to use the legacy WibuKey dongle license type. Siemens is actively preparing updates and recommends applicable mitigations for products where patches are currently unavailable. The following versions of Siemens PSS(R)SINCAL are affected: PSS(R)SINCAL V21.5 vers:all/* (CVE-2026-84854) PSS(R)SINCAL V22.0 vers:all/* (CVE-2026-84854) PSS(R)SINCAL V22.5 vers:intdot/<22.5.5 (CVE-2026-84854) CVSS Vendor Equipment v3 7 Siemens PSS(R)SINCAL V21.5 1 Vulnerability Out-of-bounds Write Background Critical Infrastructure Sectors: Critical Manufacturing, Transportation Systems, Energy, Healthcare and Public Health, Financial Services, Government Services and Facilities Countries/Areas Deployed: Worldwide Company Headquarters Location: Germany Vulnerabilities CVE-2026-84854 In the WibuKey driver, insufficient validation of user input when calculating the size of a kernel buffer could cause small amounts of data to be written o…

Tags
CISA, ICS, healthcare
Related exam domains
CISSP 4: Communication and Network Security; CISSP 7: Security Operations; CISM 2: Information Security Risk Management; CISA 2: Governance and Management of IT
Source record id
/node/25689
First seen by InfoSec Signals
Oct 22, 2026

Source: CISA cybersecurity advisories, Cybersecurity and Infrastructure Security Agency about this source more from it

Exam domain labels come from a keyword heuristic and are study hints, not an official mapping. The summary is the publisher's own text, shortened; the linked record is authoritative.

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