CVE-2026-34184
CVE-2026-34184 is a critical-severity vulnerability in Hydrosystem.poznan Control System with a CVSS 3.x base score of 9.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-862.
Key facts
- Severity: Critical (CVSS 3.x base score 9.1)
- CVSS v4: 8.8
- EPSS exploit prediction: 0% (19th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-20884
- Weakness: CWE-862
- Affected product: Hydrosystem.poznan Control System
- Published:
- Last modified:
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
Frequently asked questions
- What is 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
- How severe is CVE-2026-34184?
- CVE-2026-34184 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
- Is CVE-2026-34184 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-34184?
- CVE-2026-34184 affects Hydrosystem.poznan Control System. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-34184?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- Does CVE-2026-34184 have an EU (EUVD) identifier?
- Yes. CVE-2026-34184 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-20884.
- When was CVE-2026-34184 published?
- CVE-2026-34184 was published on 2026-04-09 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:hydrosystem.poznan:control_system:*:*:*:*:*:*:*:*
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