Vulnerability record · CVE-2023-53959 · published 19 December 2025

CVE-2023-53959: Filezilla-project filezilla client uncontrolled search path element vulnerability

Filezilla Project · Filezilla Client

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.

8.5 CVSS 4.0 High EPSS 0.85% · top 43.4% CWE-427 · Uncontrolled search path element

8.5CVSS 4.0 base score

0.85%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

3References, 1 tagged exploit

17 Jun 2026Last modified by NVD

Description

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Filezilla Client Filezilla Project

References

Link	Tags
https://filezilla-project.org/	Product
https://www.exploit-db.com/exploits/51267	ExploitThird Party AdvisoryVDB Entry
https://www.vulncheck.com/advisories/filezilla-client-dll-hijacking-via-missing-textshapingdll	Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2023-53959), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.