CVE-2025-1646
Published: 25 February 2025
Summary
CVE-2025-1646 is a medium-severity Improper Access Control (CWE-284) vulnerability. Its CVSS base score is 6.9 (Medium).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 30.3th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified are NIST 800-53 SC-7 (Boundary Protection) and SI-10 (Information Input Validation).
Deeper analysis
CVE-2025-1646 is a critical vulnerability in Lumsoft ERP 8 that enables unrestricted file upload. It affects an unknown functionality within the /Api/TinyMce/UploadAjaxAPI.ashx file of the ASPX File Handler component. The issue arises from manipulation of the 'file' argument, as classified under CWE-284 (Improper Access Control) and CWE-434 (Unrestricted Upload of File with Dangerous Type). The vulnerability carries a CVSS v3.1 base score of 7.3 (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L) and was published on 2025-02-25.
Remote attackers require no privileges or user interaction to exploit this vulnerability over the network with low complexity. Successful exploitation allows manipulation leading to unrestricted file upload, potentially enabling further compromise depending on the uploaded content, though impacts are rated low for confidentiality, integrity, and availability per the CVSS score.
Advisories from VulDB and a related GitHub report disclose a public proof-of-concept exploit but note that the vendor was contacted early without any response or patch availability. Security practitioners should restrict access to the affected endpoint, implement web application firewalls to block suspicious uploads, and monitor for anomalous file upload activity until a vendor fix is provided.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-4257
Vulnerability details
A vulnerability, which was classified as critical, has been found in Lumsoft ERP 8. Affected by this issue is some unknown functionality of the file /Api/TinyMce/UploadAjaxAPI.ashx of the component ASPX File Handler. The manipulation of the argument file leads to…
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unrestricted upload. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Unrestricted file upload in public-facing ASPX endpoint directly enables exploitation of public-facing applications and web shell deployment.
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Directly mitigates unrestricted file uploads by validating the 'file' argument in /Api/TinyMce/UploadAjaxAPI.ashx to reject dangerous types and content.
Implements boundary protections like web application firewalls to block remote exploitation attempts on the vulnerable ASPX file upload handler.
Enforces access controls on the upload endpoint to require authentication, addressing the no-privilege (PR:N) exploitation vector.