dbcve.org
Path TraversalWeakness · CWE-22

CVE-2025-34154

CRITICAL · 9.2 CVSS v4.0 Published 2025-08-13
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
100/100
Remediation priority · Urgent
Remotely reachable No privileges Zero-click

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 · unedited
UnForm Server Manager versions prior to 10.1.12 expose an unauthenticated file read vulnerability via its log file analysis interface. The flaw resides in the arc endpoint, which accepts a fl parameter to specify the log file to be opened. Due to insufficient input validation and lack of path sanitization, attackers can supply relative paths to access arbitrary files on the host system — including sensitive OS-level files — without authentication.

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 · high confidence

UnForm Server Manager versions before 10.1.12 contain an unauthenticated file read vulnerability in the arc endpoint's log file analysis interface. The fl parameter accepts file paths without proper validation or path sanitization, allowing attackers to use relative path traversal (e.g., ../../) to read arbitrary files on the host system including sensitive OS configuration files.

MitigationUpgrade to UnForm Server Manager version 10.1.12 or later. As an interim measure, restrict network access to the arc endpoint until the patch can be applied.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

CVSS 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
None
Authentication
X
User interaction
None
Scope
X

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/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:X/V:X/RE:X/U:X

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 checks

Work through these to decide whether this CVE applies to you.

  1. Confirm UnForm Server Manager is installed
    Check for UnForm Server Manager in your system services, installed programs, or look for the installation directory (commonly under /opt/unform or C:\Program Files\UnForm). Use commands like 'systemctl list-units' or check installed software listings.
    Affected if UnForm Server Manager is not present on the system
  2. Identify the installed version
    Locate the version information in the UnForm Server Manager installation, typically in a version file, about dialog, or in the main executable metadata. Check installation logs or run the server manager with a version flag if available.
    Affected if The installed version is 10.1.11 or earlier, or if the version cannot be determined and the product is present
  3. Verify the arc endpoint is accessible
    Check network configuration, firewall rules, or the application's routing configuration to determine if the /arc endpoint is exposed and reachable from the network. Test with a simple HTTP request to the endpoint URL.
    Affected if The arc endpoint is reachable over the network without authentication
  4. Test if fl parameter accepts path traversal
    Send a controlled HTTP request to the arc endpoint with the fl parameter set to a benign test path (such as ../../../etc/passwd or ../../../windows/win.ini) and observe if the file contents are returned in the response.
    Affected if The fl parameter returns file contents when given relative path traversal sequences, indicating the vulnerability is present and exploitable

You are affected if UnForm Server Manager is installed with a version before 10.1.12 and the arc endpoint with the fl parameter is network-accessible.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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 · scoped
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Upgrade to UnForm Server Manager version 10.1.12 or later. As an interim measure, restrict network access to the arc endpoint until the patch can be applied.

Recommended fix Moderate confidence

UnForm Server Manager 10.1.12

  1. Backup the current UnForm Server Manager installation and all configuration files.
  2. Stop the UnForm Server Manager service.
  3. Download UnForm Server Manager version 10.1.12 or later from the official vendor source.
  4. Install the upgrade following the vendor's standard upgrade procedure.
  5. Restart the UnForm Server Manager service.
  6. Verify the vulnerability is remediated by confirming the arc endpoint now properly sanitizes the fl parameter and rejects path traversal attempts (e.g., ../../etc/passwd).

Generated from the published advisory — verify against the referenced sources before acting.

Have this fixed Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing4.0 h
  • Review / QA2.0 h
18.0 hours of engineering $3,200
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2025-34154 in production — separate from our analysis above.

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What this is

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.

What belongs here
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  • Version or environment caveats, and links to real fixes
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