CVE-2026-9854

8.5 highEPSS 0.1%

High (8.5) in hitachienergy microscada x sys600. EPSS 0.1% chance of exploitation in the next 30 days.

A vulnerability exists in SYS600 RBAC mechanism where users having access to the engineering tools could elevate their privileges to administrator level on the underlying Windows host, granting themselves full control over the host machine.

Severity

CVSS 4.0

8.5 high

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS 3.1

7.8 high

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.1% chance of exploitation in the next 30 days; higher than 3% of CVEs (scores of 2026-10-31)
CWE: CWE-303
Published: 2026-09-03
Modified: 2026-09-09
Record from: the NVD, synced 2026-10-19

Affected

hitachienergy:microscada_x_sys600

References

https://publisher.hitachienergy.com/preview?DocumentID=8DBD000249&LanguageCode=en&DocumentPartId=&Action=Launch

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