CVE-2026-34184

CRITICAL

Missing Authorization in Hydrosystem Control System

Title source: cna
STIX 2.1

Description

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

References (2)

Core 2
Core References
Third Party Advisory third-party-advisory
https://cert.pl/posts/2026/04/CVE-2026-4901/

Scores

CVSS v3 9.1
EPSS 0.0027
EPSS Percentile 18.4%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-862
Status published
Products (2)
Hydrosystem/Control System < 9.8.5
hydrosystem.poznan/control_system < 9.8.5
Published Apr 09, 2026
Tracked Since Apr 09, 2026