CVE-2023-53959
FileZilla Client 3.63.1 DLL Hijacking via Missing TextShaping.dll
- State
- Published
- Severity
- 8.5 High
- Published
- Dec 19, 2025
- Updated
- Apr 7, 2026
- Reserved
- Dec 19, 2025
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.5 High | 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 | VulnCheck |
| 3.1 | 9.8 Critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | VulnCheck |
Weaknesses
- CWE-427 Uncontrolled Search Path Element
Affected Products
| Product | Versions |
|---|---|
FileZilla Clientfilezilla-project |
|
References
- ExploitDB-51267exploit
- Official Product Homepageproduct
- VulnCheck Advisory: FileZilla Client 3.63.1 DLL Hijacking via Missing TextShaping.dllthird-party-advisory
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