CVE-2023-53959

8.5 highEPSS 0.9%

High (8.5) in filezilla-project filezilla client. EPSS 0.9% chance of exploitation in the next 30 days.

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.

Severity

CVSS 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

CVSS 3.1

9.8 critical

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

EPSS: 0.9% chance of exploitation in the next 30 days; higher than 58% of CVEs (scores of 2026-10-31)
CWE: CWE-427
Published: 2025-12-19
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

filezilla-project:filezilla_client

References

https://filezilla-project.org/
https://www.exploit-db.com/exploits/51267
https://www.vulncheck.com/advisories/filezilla-client-dll-hijacking-via-missing-textshapingdll

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