CVE-2021-47753

CRITICAL 9.8

phpKF CMS 3.00 Beta y6 - Remote Code Execution (RCE) (Unauthenticated)

CVSS Score

9.8

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-434
Vendor	phpkf
Product	phpkf cms
Published	Jan 15, 2026
Last Updated	Apr 7, 2026

Stay Ahead of the Next One

Get instant alerts for phpkf phpkf cms

Be the first to know when new critical vulnerabilities affecting phpkf phpkf cms are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

Phpkf / phpKF CMS

3.00

References

NVD ↗ CVE.org ↗ EPSS Data ↗

exploit-db.com: https://www.exploit-db.com/exploits/50610 phpkf.com: https://www.phpkf.com/ phpkf.com: https://www.phpkf.com/indirme.php

Credits

Halit AKAYDIN (hLtAkydn)