CVE-2025-34350 UnForm Server < 10.1.15 Doc Flow Unauthenticated File Read
Unauthenticated attackers can read arbitrary files and coerce SMB authentication via the Doc Flow arc endpoint, leading to information disclosure and potential lateral movement.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-34350?
CVE-2025-34350 is a high-severity path traversal vulnerability in Synergetic Data Systems, Inc. UnForm Server, published on 25 Nov 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Which versions are affected by CVE-2025-34350?
How do I fix CVE-2025-34350?
No fix has been published for CVE-2025-34350 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2025-34350 being exploited?
There is no known exploitation of CVE-2025-34350 in the wild and no public exploit code.
Sources
Also known as GHSA-mvpf-rmh6-jw24.