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CVE-2026-9854

Quick assessment

Affected
Hitachi Energy MicroSCADA SYS600
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

SYS600 的 RBAC（基于角色的访问控制）机制存在一个漏洞，拥有工程工具访问权限的用户可以提升其在底层 Windows 主机上的权限至管理员级别，从而获得对主机的完全控制权。

CVSS 8.5 · High EPSS 0.12% · P2

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 1

VendorProduct Version RangeStatus
Hitachi Energy MicroSCADA SYS600 10.0≤ 10.7 affected
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I. Basic Information for CVE-2026-9854

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
认证算法的不正确实现
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Hitachi Energy MicroSCADA SYS600 10.0 ~ 10.7 -

II. Public POCs for CVE-2026-9854

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III. Intelligence Information for CVE-2026-9854

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Vendor Advisories for CVE-2026-9854 (1)

Same Patch Batch · Hitachi Energy · 2026-09-03 · 4 CVEs total

CVE-2026-9853 8.5 HIGH SYS600 认证缺失致对象越权读写漏洞
CVE-2026-17539 5.9 MEDIUM RTU500 IEC104空指针解引用导致拒绝服务
CVE-2026-9852 4.6 MEDIUM SYS600 CSV注入漏洞

IV. Related Vulnerabilities

Same product: MicroSCADA SYS600
Same vendor: Hitachi Energy
Same weakness: CWE-303

V. Comments for CVE-2026-9854

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