Hydrosystem Control flaws risk full takeover
Three vulnerabilities in Hydrosystem Control System let attackers steal logged credentials, bypass authorization, and inject SQL to potentially seize full database control.
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What to check
- Applies to
- The 3 CVEs named below. Whether you run an affected version is not assessed: check the versions the source lists.
- Exploitation
- No exploitation in the wild and no public exploit is recorded for the CVEs named.
CERT Polska coordinated disclosure of three vulnerabilities in Hydrosystem Control System, an industrial control platform. CVE-2026-4901 causes the system to log sensitive data including user credentials, which combined with CVE-2026-34184's missing directory authorization could let an unauthenticated attacker read those logs and harvest login credentials. CVE-2026-34184 also allows unauthorized attackers to read and execute files in unprotected directories, including running arbitrary PHP scripts directly against the connected database.
CVE-2026-34185 describes widespread SQL injection across most scripts and input parameters, allowing an authenticated attacker to run arbitrary SQL commands and potentially gain full control of the backend database. Chained together, these three issues present a path from unauthenticated log access to credential theft, unauthorized file execution, and full database compromise. The vendor has fixed all three issues in version 9.8.5, and the report credits researcher Jarosław Kamiński of Securitum for the responsible disclosure. No active exploitation has been reported.
Mentioned in this report
Source reporting: https://cert.pl/en/posts/2026/04/CVE-2026-4901
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