Authorization Bypass in Hydrosystem Control System by Hydrosystem
CVE-2026-34184

8.8HIGH

Key Information:

Vendor

Hydrosystem

Status
Control System
Vendor
CVE Published:
9 April 2026

What is CVE-2026-34184?

The Hydrosystem Control System lacks proper authorization enforcement for specific directories, allowing unauthorized users to access and read sensitive files. This flaw could enable an attacker to execute PHP scripts on the connected database, posing a significant risk to the integrity and security of the systems. The vulnerability has been addressed in version 9.8.5 of the Hydrosystem Control System, highlighting the importance of keeping software up to date to safeguard against such exploits.

Affected Version(s)

Control System 0 < 9.8.5

References

https://cert.pl/posts/2026/04/CVE-2026-4901/
third-party-advisory
https://www.hydrosystem.poznan.pl/
product

CVSS V4

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Jarosław "Jahrek" Kamiński - Securitum
.