CVE-2026-9854: CWE-303 Incorrect implementation of authentication algorithm in Hitachi Energy MicroSCADA SYS600
Description
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.
CVSS v4.0
Score 8.5high
Affected software
Hitachi Energy
MicroSCADA SYS600
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-303) in MicroSCADA SYS600's RBAC mechanism allows privilege escalation from engineering tool users to full administrator rights on the Windows host. The flaw arises from improper authentication algorithm implementation, enabling unauthorized privilege elevation. The affected version is 10.0. No official patch or remediation has been published yet, and there are no known exploits in the wild.
Potential Impact
Successful exploitation grants an attacker with engineering tool access full administrative control over the Windows host machine running MicroSCADA SYS600. This could lead to complete system compromise, unauthorized changes, and potential disruption of critical infrastructure operations managed by the software.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict access to engineering tools to trusted personnel only and monitor for unusual privilege escalations.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Hitachi Energy
- Date Reserved
- 2026-05-28T15:04:57.817Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6a992adaacd9273b49a53d8c
Added to database: 09/03/2026, 08:07:54 UTC
Last enriched: 09/07/2026, 13:16:22 UTC
Last updated: 10/17/2026, 18:48:24 UTC
Views: 89
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