CVE-2021-47753
phpKF CMS 3.00 Beta y6 - Remote Code Execution (RCE) (Unauthenticated)
- State
- Published
- Severity
- 9.3 Critical
- Published
- Jan 15, 2026
- Updated
- Apr 7, 2026
- Reserved
- Jan 10, 2026
Description
phpKF CMS 3.00 Beta y6 contains an unauthenticated file upload vulnerability that allows remote attackers to execute arbitrary code by bypassing file extension checks. Attackers can upload a PHP file disguised as a PNG, rename it, and execute system commands through a crafted web shell parameter.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 9.3 Critical | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 9.8 Critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | VulnCheck |
Weaknesses
- CWE-434 Unrestricted Upload of File with Dangerous Type
Affected Products
| Product | Versions |
|---|---|
phpKF CMSPhpkf |
|
References
- ExploitDB-50610exploit
- Official Vendor Homepageproduct
- Software Download Pageproduct
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