Arbitrary file upload in Kinfor Kfox
CVE-2025-4561
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.
Vulnerability class: Unrestricted File Upload
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.007 (50.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 50.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: +0.000
Affected products
- Kinfor Kfox — versions 0
Weakness classification (CWE)
References
- www.twcert.org.tw/tw/cp-132-10120-269d9-1.html (third-party-advisory)
- www.twcert.org.tw/en/cp-139-10121-ddbfa-2.html (third-party-advisory)
Frequently asked questions
- What is CVE-2025-4561?
- CVE-2025-4561 is a high-severity vulnerability in Kinfor Kfox, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 8.8/10. Published 2025-05-12.
- How severe is CVE-2025-4561?
- High severity. CVSS v3 base score is 8.8 out of 10.