High severity · published Sep 3, 2026
CVE-2026-9853
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…
7.8
CVSS
0.1%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 4% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MS
MicroSCADA SYS600 · Hitachi Energy
10.0 through 10.8 · source: vendor
MX
Microscada X Sys600 · Hitachienergy
10.0 through 10.8 · source: NVD
In the news
VulnerabilityHigh
Hitachi Energy MicroSCADA X SYS600 Product
View CSAF
Summary
Hitachi Energy is aware of multiple vulnerabilities that affect MicroSCADA X SYS600 product versions listed in this document. These vulnerabilities can be exploited to carry out various attacks on the product. Please refer to the Recommended Immediate Actions for information about the mitigation/remediation.
The following versions of Hitachi Energy MicroSCADA X SYS600 Product are affected:
MicroSCADA X SYS600 vers:MicroSCADA_X_SYS600/<=10.7, 10.8 (CVE-2026-9852, CVE-2026-9853, CVE-2026-9854, CVE-2026-9853)
CVSS
Vendor
Equipment
v3 7.8
Hitachi Energy
MicroSCADA X SYS600
2 Vulnerabilities
Improper Neutralization of Formula Elements in a CSV File, Incorrect Implementation of Authentication Algorithm
Background
Critical Infrastructure Sectors: Energy
Countries/Areas Deployed: Worldwide
Company Headquarters Location: Switzerland
Vulnerabilities
Expand All +
CVE-2026-9852
A CSV injection vulnerability exists in SYS600. Injected malicious formulas can add or modify data to the spreadsheet, insert links, exfiltrate data, and in some cases, depending on how the user has their environment configured, execute malicious code on the user’s machine. To exploit this issue attackers would need a way to create arbitrary log messages. This could be achieved through normal functionality via SCIL scripts, a log injection vulnerability, or via the SYS600 broker. This vu...
Oct 20, 2026·US-CERT ICS Advisories
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-9853
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-9853
Vendor Advisory
https://publisher.hitachienergy.com/preview?DocumentID=8DBD000249&LanguageCode=en&DocumentPartId=&Action=Launch
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