CVE-2026-4901
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedAlanWeb 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
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceThe Hydrosystem Control System improperly logs sensitive information, specifically user credentials, to log files. This allows attackers who can access these log files (especially when combined with CVE-2026-34184) to obtain valid credentials and gain unauthorized system access.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data< 9.8.5CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify installed product versionLocate and retrieve the version information for Hydrosystem.poznan Control System installed in your environment. This is typically found in the application itself, an about page, or system information files.Affected if The installed version is lower than 9.8.5 (e.g., 9.8.4, 9.7.x, etc.)
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Locate application log filesFind all log files generated by the Hydrosystem Control System. Common locations include a /logs or /var/log directory within the application installation folder, or a dedicated logging directory configured in the system.Affected if Log files exist and are accessible to the application user or system administrators
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Inspect log contents for credentialsSearch through the identified log files for patterns that may indicate exposed credentials, such as strings containing 'password', 'credential', 'token', 'auth', or similar sensitive terms. Review log entries around authentication events.Affected if Log files contain any plaintext or weakly obfuscated user credentials, authentication tokens, or sensitive authentication-related data
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Check log file access controlsReview file system permissions on the log directory and individual log files to determine if unauthorized users or processes could read these files.Affected if Log files have overly permissive access controls that allow users beyond administrators to read them
You are affected if the installed Hydrosystem.poznan Control System version is below 9.8.5 and log files contain exposed user credentials.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
dbcve · scoped9.8.5
Update to Hydrosystem Control System version 9.8.5 or later. Review and purge existing log files that may contain exposed credentials and rotate any potentially compromised credentials.
9.8.5
- 1. Identify the current version of Hydrosystem Control System in use
- 2. Create a complete backup of the system configuration and data
- 3. Obtain the version 9.8.5 upgrade package from the official vendor (Hydrosystem)
- 4. Upgrade the Hydrosystem Control System to version 9.8.5 following vendor documentation
- 5. After upgrade, verify the version has been correctly updated
- 6. Review log files to confirm that user credentials are no longer being written to logs
- 7. Monitor the system to ensure normal operation after the upgrade
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,120.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-4901 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2026-4901 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data