CVE-2026-34184

Hydrosystem Control System does not enforce authorization for some directories. This allows an unauthorized attacker to read all files in these directories and even execute some of them. Critically the attacker could run PHP scripts directly on the connected database.This issue was fixed in Hydrosystem Control System version 9.8.5

CVSS v3 9.1 CRITICAL

9.1^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://cert.pl/posts/2026/04/CVE-2026-4901/	Vendor Advisory
https://www.hydrosystem.poznan.pl/	Product

Configurations

Configuration 1 (hide)

cpe:2.3:a:hydrosystem.poznan:control_system:*:*:*:*:*:*:*:*

History

20 Apr 2026, 17:06

Type	Values Removed	Values Added
CPE		cpe:2.3:a:hydrosystem.poznan:control_system::::::::
References	~~() https://cert.pl/posts/2026/04/CVE-2026-4901/ -~~	() https://cert.pl/posts/2026/04/CVE-2026-4901/ - Vendor Advisory
References	~~() https://www.hydrosystem.poznan.pl/ -~~	() https://www.hydrosystem.poznan.pl/ - Product
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 9.1
First Time		Hydrosystem.poznan Hydrosystem.poznan control System

09 Apr 2026, 10:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-04-09 10:16

Updated : 2026-04-20 17:06

NVD link : CVE-2026-34184

Mitre link : CVE-2026-34184

CVE.ORG link : CVE-2026-34184

JSON object : View

Products Affected

hydrosystem.poznan

control_system

CWE

CWE-862

Missing Authorization

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