AUGUST 4, 2026
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Case File

CVE-2023-53959

CRITICAL · CVSS 9.8 EPSS 0.75% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2025-12-19 · Last synced 2026-08-04

CyberRota Analysis

This is a critical severity vulnerability with a CVSS score of 9.8. Public exploit code or proof-of-concept references have been detected in its references. It may be remotely exploitable.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
remote code execution code execution
External Security References

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2023-53959
Severity
CRITICAL
CVSS
9.8
EPSS
0.75%

Original NVD 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.

Related CVEs

Other vulnerabilities affecting the same vendor(s)