CVE-2025-41692
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 · uneditedA high privileged remote attacker with admin privileges for the webUI can brute-force the "root" and "user" passwords of the underlying OS due to a weak password generation algorithm.
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 confidenceThis vulnerability exists in the webUI of a network device/appliance where a weak password generation algorithm allows an authenticated admin user to brute-force the underlying OS root and user account passwords. The attacker already needs admin-level webUI access, but can leverage this flaw to escalate to the host operating system.
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< 3.50< 3.50< 3.50< 3.50< 3.50< 3.50< 3.50< 3.50CVSS 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
- High
- User interaction
- None
- Scope
- Changed
- Confidentiality
- High
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/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 the FL Switch modelAccess the device console, CLI, or webUI and locate the exact model number (e.g., FL Switch 2208, FL Switch 2608 PN, FL Switch 2708)Affected if The device is one of the following models: FL Switch 2708 PN, FL Switch 2708, FL Switch 2608 PN, FL Switch 2608, FL Switch 2516 PN, FL Switch 2208c, FL Switch 2208 PN, or FL Switch 2208
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Check the installed firmware versionLog into the device webUI or console and navigate to the firmware or system information section to view the running firmware versionAffected if The firmware version is less than 3.50 (for example, 3.40, 3.32, or any version below 3.50)
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Verify the webUI is accessibleAttempt to reach the device webUI by entering its IP address in a web browser over HTTP or HTTPSAffected if The webUI is reachable and presents a login prompt
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Confirm admin account existsIn the webUI, navigate to the user administration or administrator settings to verify that at least one admin-level account is configuredAffected if An admin-level user account is configured and can authenticate to the webUI
The environment is affected if the device is one of the listed FL Switch models running firmware version below 3.50 and the webUI with admin accounts is accessible.
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 · scoped3.50
Implement a cryptographically strong password generation algorithm with proper entropy, combined with rate limiting and account lockout mechanisms on the webUI to prevent brute-force attacks.
Firmware version 3.50
- Obtain FL Switch firmware version 3.50 or later from Phoenix Contact (the vendor) via their official support channels or website
- Access the web-based management interface of the affected FL Switch device
- Navigate to the firmware update or system maintenance section of the webUI
- Upload the firmware file (version 3.50 or later) and initiate the update process
- Wait for the firmware upload and installation to complete - do not power off the device during this process
- After reboot, verify the installed firmware version is 3.50 or later in the webUI
- Confirm normal network operation and accessibility of the switch
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation4.0 h
- Testing2.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,560.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-41692 — 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-2025-41692 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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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- 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