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CVE-2023-53959

HIGH CVSS 4.0: 8.5 EPSS 0.37%
Updated Apr 09, 2026
Filezilla-Project
Parameter Value
CVSS 8.5 (HIGH)
Type CWE-427 (Uncontrolled Search Path Element)
Vendor Filezilla-Project
Public PoC Yes

FileZilla Client 3.63.1 contains a DLL hijacking vulnerability that allows attackers to execute malicious code by placing a crafted TextShaping.dll in the application directory. Attackers can generate a reverse shell payload using msfvenom and replace the missing DLL to achieve remote code execution when the application launches.

Attack Parameters

Attack Vector
Local
Requires local access
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v4.0

Vulnerable Products 1

Configuration From (including) Up to (excluding)
Filezilla-Project Filezilla_Client
cpe:2.3:a:filezilla-project:filezilla_client:3.63.1:*:*:*:*:*:*:*