Remote Code Execution Vulnerability in Schlix CMS by Schlix
CVE-2021-47964

8.7HIGH

Key Information:

Vendor

Schlix

Status
Schlix Cms
Vendor
CVE Published:
15 May 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2021-47964?

Schlix CMS version 2.2.6-6 is susceptible to a remote code execution flaw that can be exploited by authenticated attackers. By uploading specially crafted ZIP files containing malicious PHP code via the block manager, attackers can execute arbitrary code. This is triggered when the malicious code is accessed through the About tab of the installed extension, potentially leading to unauthorized access and control over the affected system.

Affected Version(s)

Schlix CMS 2.2.6-6

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2021-47964 - Proof of Concept

References

https://www.exploit-db.com/exploits/49838
exploit
https://www.schlix.com/
product
https://www.schlix.com/downloads/schlix-cms/schlix-cms-v2...
product

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Eren Saraç
.