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Vulnerability record · CVE-2026-4901 · published 9 April 2026

CVE-2026-4901: Hydrosystem.poznan control system sensitive information in log file vulnerability

HHydrosystem.Poznan · Control System

AlanWeb SCADA saves sensitive information into a log file. Critically, user credentials are logged allowing the attacker to obtain further authorized access into the system. Combined with vulnerability CVE-2026-34184, these sensitive information could be accessed by an unauthorized user. This issue was fixed in AlanWeb SCADA version 9.8.5

6.9 CVSS 4.0 Medium EPSS 0.40% · top 68.4% CWE-532 · Sensitive information in log file
6.9CVSS 4.0 base score
0.40%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
13 Aug 2026Last modified by NVD

Description

AlanWeb SCADA saves sensitive information into a log file. Critically, user credentials are logged allowing the attacker to obtain further authorized access into the system. Combined with vulnerability CVE-2026-34184, these sensitive information could be accessed by an unauthorized user. This issue was fixed in AlanWeb SCADA version 9.8.5

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://cert.pl/posts/2026/04/CVE-2026-4901/ Vendor Advisory
https://control-system.pl/

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

8.8CVE-2026-34184Hydrosystem.poznan control system missing authorization vulnerabilityAlanWeb SCADA does not enforce authorization for some directories. This allows an unauthorized attacker to read all files in these directories and ev…EPSS 0.46%8.7CVE-2026-34185Hydrosystem.poznan control system sql injection vulnerabilityAlanWeb SCADA is vulnerable to SQL Injection across most scripts and input parameters. Because no protections are in place, an authenticated attacker…EPSS 0.47%4.6CVE-2025-24984Windows NTFS logs sensitive information, enabling physical-attack disclosureWindows NTFS writes sensitive information into a log file, which an attacker can read to disclose data. The flaw is rated CVSS 3.1 4.6 (Medium) and a…KEVEPSS 2.0%analysed4.4CVE-2023-21492Samsung Android kernel pointer logging enables ASLR bypassSamsung Android devices log kernel pointers to a log file before the SMR May-2023 Release 1 fix. A privileged local attacker who can read those logs …KEVEPSS 2.6%analysed

Source: NIST National Vulnerability Database (record CVE-2026-4901), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.