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.
Published: 2025-12-19
Score: 8.5 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Thu, 05 Mar 2026 12:30:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:filezilla-project:filezilla_client:3.63.1:*:*:*:*:*:*:*

Sun, 21 Dec 2025 21:30:00 +0000

Type Values Removed Values Added
First Time appeared Filezilla-project
Filezilla-project filezilla Client
Vendors & Products Filezilla-project
Filezilla-project filezilla Client

Fri, 19 Dec 2025 22:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Fri, 19 Dec 2025 21:15:00 +0000

Type Values Removed Values Added
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.
Title FileZilla Client 3.63.1 DLL Hijacking via Missing TextShaping.dll
Weaknesses CWE-427
References
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 8.5, 'vector': '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'}


Subscriptions

Filezilla-project Filezilla Client
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-04-07T14:08:13.413Z

Reserved: 2025-12-19T14:03:57.724Z

Link: CVE-2023-53959

cve-icon Vulnrichment

Updated: 2025-12-19T21:28:56.596Z

cve-icon NVD

Status : Analyzed

Published: 2025-12-19T21:15:53.030

Modified: 2026-04-09T21:19:48.913

Link: CVE-2023-53959

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2025-12-21T21:12:40Z

Weaknesses