Vulnerability Intelligence Report
FileZilla Client 3.63.1 DLL Hijacking via Missing TextShaping.dll
CVE-2023-53959
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.
No Active Exploit Signals
CVSS Base Score
8.5
HIGH
EPSS Probability:0.73%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
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Authentication
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Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-427 ↗Uncontrolled Search Path Element
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| filezilla-project | FileZilla Client | 3.63.1 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
EPSS Score
0.733%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | VulnCheck · Bug Bounty Provider · USA |
| Reserved | 2025-12-19T14:03:57 |
| Published | 2025-12-19T21:05:53 |
| Patch Date | 2023-04-06 |
| Last Updated | 2026-04-07T14:08:13 |
Community Chatter & Buzz