CVE-2023-53959

CRITICAL

9.8

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.

CVE Details

CVSS v3.1 Score9.8

SeverityCRITICAL

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

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published12/19/2025

Last Modified4/9/2026

Sourcenvd

Honeypot Sightings0

Affected Products

filezilla-project:filezilla_client

Weaknesses (CWE)

CWE-427

References

https://filezilla-project.org/(disclosure@vulncheck.com)

https://www.exploit-db.com/exploits/51267(disclosure@vulncheck.com)

https://www.vulncheck.com/advisories/filezilla-client-dll-hijacking-via-missing-textshapingdll(disclosure@vulncheck.com)

IOC Correlations

No correlations recorded

This product uses data from the NVD API but is not endorsed or certified by the NVD.