— Unscored

Siemens PSS(R)SINCAL

CVE-2026-84854

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…

Assessment

CVSS: Not yet scored
Severity: Unscored
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 22 October 2026
Last updated: 22 October 2026

At the source

CISA Advisories

References

https://www.cisa.gov/news-events/ics-advisories/icsa-26-295-06

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