Vulnerability · Published Sep 3, 2026 · Assigned by Hitachi Energy
CVE-2026-9854
High 8.5
In plain English
A high-severity security flaw in MicroSCADA SYS600 from Hitachi Energy. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 4% of all known vulnerabilities).
Severity (CVSS 4.0)8.5High
Exploit odds (30 days)0.1%top 96.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Hitachi Energy | MicroSCADA SYS600 | 10.0 – through 10.7 |
Weakness: CWE-303 · Vector: 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