CVE-2025-35055
Published: 09 October 2025
Description
Adversaries may backdoor web servers with web shells to establish persistent access to systems.
Security Summary
CVE-2025-35055 affects Newforma Info Exchange (NIX), specifically the '/UserWeb/Common/UploadBlueimp.ashx' endpoint. This vulnerability enables an authenticated attacker to upload arbitrary files to any location writable by the NIX application. It is associated with CWE-22 (path traversal) and CWE-434 (unrestricted upload of file with dangerous type), earning a CVSS v3.1 base score of 8.8 (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).
An authenticated attacker can exploit this to upload and execute a web shell or other content runnable by the web server, achieving remote code execution, or delete directories. In Newforma versions before 2023.1, anonymous access is enabled by default via the related CVE-2025-35062, allowing unauthenticated attackers to effectively authenticate as 'anonymous' and chain the exploits for unauthorized file upload and execution.
For mitigation details, refer to advisories including the CISA CSAF at https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2025/va-25-282-01.json and CVE records at https://www.cve.org/CVERecord?id=CVE-2025-35055 and https://www.cve.org/CVERecord?id=CVE-2025-35062. The vulnerability was published on 2025-10-09.
Details
- CWE(s)
Affected Products
MITRE ATT&CK Enterprise Techniques
Why these techniques?
CVE enables exploitation of public-facing application (T1190) via path traversal and unrestricted file upload, facilitating deployment and execution of web shells (T1505.003) for RCE.