CVE-2025-34350

UnForm Server < 10.1.15 Doc Flow Unauthenticated File Read

HIGH
8.7
CVSS Score
Published: November 25, 2025 at 07:04 PM UTC
Updated: October 18, 2026 at 08:10 PM UTC
1 product affected across 1 vendorUnForm Server

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Severity
HIGH8.7
Exploit prediction
EPSS 0.8%
SSVC
No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

0 ≤ v < 10.1.150
Affected range stops below 10.1.15, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (2)

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.7HIGHVulnCheck
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-22CWE-918

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