CVE-2025-4561
Published: 12 May 2025
Summary
CVE-2025-4561 is a high-severity Unrestricted Upload of File with Dangerous Type (CWE-434) vulnerability in Org (inferred from references). Its CVSS base score is 8.7 (High).
Operationally, ranked in the top 20.7% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
The KFOX product from KingFor contains an arbitrary file upload vulnerability tracked as CVE-2025-4561. The flaw, assigned CWE-434, permits unauthenticated or low-privileged remote attackers to place arbitrary files on the server; the CVSS 4.0 score of 8.7 reflects network attack vector, low complexity, and low required privileges with high impact on confidentiality, integrity, and availability.
An attacker who already possesses regular user credentials can upload a web shell or other executable payload and then invoke it to obtain arbitrary code execution on the underlying server. The vulnerability therefore allows an authenticated remote user to escalate from limited application access to full control of the host.
Taiwanese CERT advisories published at the referenced URLs provide vendor-specific mitigation guidance and patch availability for affected KFOX installations. The associated EPSS score has remained flat at 0.0120 with no material increase since disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-14319
Vulnerability details
The KFOX from KingFor has an Arbitrary File Upload vulnerability, allowing remote attackers with regular privilege to upload and execute web shell backdoors, thereby enabling arbitrary code execution on the server.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Requiring identifiable owners for portable devices reduces the attack surface for unrestricted uploads of dangerous file types via anonymous media.
Dangerous file uploads can be detonated in the chamber to determine malice before any production write or execution occurs.
Prevents unrestricted writing of arbitrary or malicious firmware by keeping hardware write-protect enabled except under tightly controlled manual procedures.
Scans files from external sources on download/open/execute, blocking unrestricted uploads of dangerous file types.