dbcve.org
Path TraversalWeakness · CWE-22

CVE-2025-34350

HIGH · 8.7 CVSS v4.0 Published 2025-11-25
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
96/100
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 versions < 10.1.15 contain an unauthenticated arbitrary file read and SMB coercion vulnerability in the Doc Flow feature’s 'arc' endpoint. The Doc Flow module uses the 'arc' handler to retrieve and render pages or resources specified by the user-supplied 'pp' parameter, but it does so without enforcing authentication or restricting path inputs. As a result, an unauthenticated remote attacker can supply local filesystem paths to read arbitrary files accessible to the service account. On Windows deployments, providing a UNC path can also coerce the server into initiating outbound SMB authentication, potentially exposing NTLM credentials for offline cracking or relay. This issue may lead to sensitive information disclosure and, in some environments, enable further lateral movement.

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 versions before 10.1.15 have an unauthenticated arbitrary file read vulnerability in the Doc Flow module's 'arc' endpoint. The 'pp' parameter accepts user-supplied paths without validation or authentication, allowing remote attackers to read any file accessible to the service account. On Windows, providing a UNC path triggers outbound SMB connections that can expose NTLM credentials for relay or cracking.

MitigationUpgrade to UnForm Server version 10.1.15 or later. As interim measures, restrict network access to the Doc Flow endpoint and block outbound SMB traffic at the perimeter to prevent NTLM relay attacks.

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: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: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. Determine UnForm Server version
    Check the installed UnForm Server version through the administration console, software inventory, or running 'ufserver -v' if available. Compare the version number to the 10.1.15 threshold.
    Affected if Installed version is below 10.1.15 (e.g., 10.1.14, 10.0.x, 9.x)
  2. Confirm Doc Flow module is enabled
    Inspect UnForm Server configuration files or admin interface to verify the Doc Flow module is installed and active. Look for 'DocFlow' or 'arc' related configuration entries.
    Affected if Doc Flow module is installed and enabled on the server
  3. Verify network accessibility of the arc endpoint
    Test HTTP/HTTPS access to the '/arc' endpoint of the Doc Flow service. Attempt a request to the endpoint (e.g., GET /docflow/arc or similar path based on your installation).
    Affected if The arc endpoint is reachable over the network without authentication
  4. Check for unauthenticated pp parameter access
    Send a request to the arc endpoint with a test 'pp' parameter pointing to a non-sensitive file (e.g., ?pp=/etc/hosts on Linux). Observe if the file content is returned.
    Affected if The pp parameter accepts arbitrary file paths without authentication and returns file contents
  5. Assess Windows SMB exposure
    If the server runs Windows, determine if outbound SMB traffic (ports 445, 139) is permitted through the firewall. Check if UNC path input triggers outbound connections.
    Affected if Server is Windows-based and allows outbound SMB traffic, enabling NTLM credential exposure via UNC paths

The environment is affected if UnForm Server version is below 10.1.15 AND the Doc Flow module with its unauthenticated arc endpoint is accessible over the network.

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 version 10.1.15 or later. As interim measures, restrict network access to the Doc Flow endpoint and block outbound SMB traffic at the perimeter to prevent NTLM relay attacks.

Recommended fix High confidence

10.1.15

  1. Identify the current UnForm Server version running in the environment
  2. Obtain UnForm Server version 10.1.15 or later from the official vendor (unform.com)
  3. Backup the current UnForm Server configuration and data directories before upgrading
  4. Apply the upgrade to UnForm Server version 10.1.15 or later following vendor documentation
  5. Verify the Doc Flow 'arc' endpoint now requires authentication and properly sanitizes the 'pp' parameter
  6. Confirm the vulnerability is remediated by attempting (and failing) to access arbitrary files via the 'pp' parameter

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-2025-34350 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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