Vulnerability · Published Sep 3, 2026 · Assigned by Hitachi Energy
CVE-2026-9853
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 which allows any user authenticated to the operating system of the server hosting the application to read and modify application objects without being authenticated to the SYS600 system itself. Only the SYS600 system users should be permitted to view and modify application objects.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Hitachi Energy | MicroSCADA SYS600 | 10.0 – through 10.8 |
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