CVE-2026-34185

High

Published: 09 April 2026

Published

09 April 2026

Modified

20 April 2026

KEV Added

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Patch

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CVSS Score 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Score 0.0003 9.4th percentile

Risk Priority 18 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2026-34185 is a high-severity SQL Injection (CWE-89) vulnerability in Hydrosystem.Poznan Control System. Its CVSS base score is 8.8 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Privilege Escalation (T1068); ranked at the 9.4th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-2 (Flaw Remediation).

Threat & Defense at a Glance

What attackers do: exploitation maps to Exploitation for Privilege Escalation (T1068) and 4 other techniques. What defenders deploy: see the NIST 800-53 controls recommended below.

Threat & Defense Details

Mitigating Controls (NIST 800-53 r5)AI

SI-10 Information Input Validation good match

prevent

Directly addresses the absence of input protections by requiring validation and sanitization of all inputs to prevent SQL injection attacks like CVE-2026-34185.

SI-2 Flaw Remediation good match

prevent

Ensures timely flaw remediation, such as patching to Hydrosystem Control System version 9.8.5, to eliminate the SQL injection vulnerability.

SI-9 Information Input Restrictions partial match

prevent

Restricts the types and quantities of inputs accepted by the system, reducing the attack surface for SQL injection across scripts and parameters.

MITRE ATT&CK Enterprise TechniquesAI

T1068 Exploitation for Privilege Escalation Privilege Escalation

Adversaries may exploit software vulnerabilities in an attempt to elevate privileges.

attack.mitre.org →

T1190 Exploit Public-Facing Application Initial Access

Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.

attack.mitre.org →

T1213.006 Databases Collection

Adversaries may leverage databases to mine valuable information.

attack.mitre.org →

T1485 Data Destruction Impact

Adversaries may destroy data and files on specific systems or in large numbers on a network to interrupt availability to systems, services, and network resources.

attack.mitre.org →

T1565.001 Stored Data Manipulation Impact

Adversaries may insert, delete, or manipulate data at rest in order to influence external outcomes or hide activity, thus threatening the integrity of the data.

attack.mitre.org →

Why these techniques?

SQL injection in network-accessible app with low-priv auth allows arbitrary DB queries leading to data collection (T1213.006), stored data manipulation (T1565.001), data destruction (T1485); enables priv esc (T1068) and public-facing app exploitation (T1190) due to remote access and high C/I/A impact.

Confidence: MEDIUM · MITRE ATT&CK Enterprise v18.1

NVD Description

Hydrosystem Control System is vulnerable to SQL Injection across most scripts and input parameters. Because no protections are in place, an authenticated attacker can inject arbitrary SQL commands, potentially gaining full control over the database.This issue was fixed in Hydrosystem…

Control System version 9.8.5

Deeper analysisAI

CVE-2026-34185 is a SQL injection vulnerability affecting the Hydrosystem Control System, impacting most scripts and input parameters due to the absence of any input protections. This flaw, published on 2026-04-09, allows an authenticated attacker to inject arbitrary SQL commands, potentially achieving full control over the underlying database. The vulnerability is rated 8.8 on the CVSS 3.1 scale (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) and is associated with CWE-89. It was addressed in Hydrosystem Control System version 9.8.5.

An attacker with low privileges (such as a standard authenticated user) can exploit this vulnerability remotely over the network with low complexity and no user interaction required. Successful exploitation enables the execution of arbitrary SQL queries, leading to high-impact confidentiality, integrity, and availability violations, including data exfiltration, modification, or deletion, and potentially full database compromise.

Mitigation is available through upgrading to Hydrosystem Control System version 9.8.5, as stated in the vulnerability description. Additional details are provided in advisories from CERT.PL at https://cert.pl/posts/2026/04/CVE-2026-4901/ and the vendor site at https://www.hydrosystem.poznan.pl/.