CVE-2023-53959

CRITICAL

FileZilla Client 3.63.1 - Code Injection

Title source: llm

Description

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.

Exploits (1)

exploitdb WORKING POC

by Bilal Qureshi · textlocalwindows

https://www.exploit-db.com/exploits/51267

View Code ZIP pw:eip

References (3)

[Various Sources] https://filezilla-project.org/

[Exploit, Third Party Advisory] https://www.exploit-db.com/exploits/51267

[Third Party Advisory] https://www.vulncheck.com/advisories/filezilla-client-dll-hijacking-via-missing-textshapingdll

Scores

CVSS v3 9.8

EPSS 0.0037

EPSS Percentile 59.0%

Attack Vector NETWORK

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

Details

CWE

CWE-427

Status published

Products (2)

filezilla-project/FileZilla Client 3.63.1

filezilla-project/filezilla_client 3.63.1

Published Dec 19, 2025

Tracked Since Feb 18, 2026