CVE-2023-53959: FileZilla Client 3.63.1 DLL Hijacking via Missing TextShaping.dll

Published Dec 19, 2025
·
Updated

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.

Affected Software

2 affected components
FileZilla FileZilla Client
Filezilla-project Filezilla Client=3.63.1

Event History

Dec 19, 2025
CVE Published
via MITRE·09:05 PM
Data Sourced
via MITRE·09:05 PM
DescriptionSeverityWeakness
Data Sourced
via NVD·09:15 PM
DescriptionSeverityWeaknessAffected Software
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Frequently Asked Questions

1

What is the severity of CVE-2023-53959?

CVE-2023-53959 is classified as a high-severity vulnerability due to its potential for executing arbitrary code.

2

How do I fix CVE-2023-53959?

To fix CVE-2023-53959, update to the latest version of FileZilla Client that addresses this vulnerability.

3

What type of attack can be executed through CVE-2023-53959?

CVE-2023-53959 allows attackers to execute a DLL hijacking attack, enabling them to run malicious code on the affected system.

4

Which versions of FileZilla Client are affected by CVE-2023-53959?

CVE-2023-53959 affects FileZilla Client version 3.63.1 and potentially earlier versions.

5

Can CVE-2023-53959 be exploited remotely?

Yes, CVE-2023-53959 can be exploited remotely by placing a malicious DLL in the application directory.

Contact

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