CVE-2025-34110CWE-22CWE-306CWE-552

ColoradoFTP Server <= 1.3 Build 8 Path Traversal Information Disclosure

Critical · published July 15, 2025

CVSS v4.0
9.3
EPSS
2%
Percentile
79.8
In the wild
Unconfirmed
What it is

A directory traversal vulnerability exists in ColoradoFTP Server ≤ 1.3 Build 8 for Windows, allowing unauthenticated attackers to read or write arbitrary files outside the configured FTP root directory. The flaw is due to insufficient sanitation of user-supplied file paths in the FTP GET and PUT command handlers. Exploitation is possible by submitting traversal sequences during FTP operations, enabling access to system-sensitive files. This issue affects only the Windows version of ColoradoFTP.

The record
Technical detail
CVSS v4.0
9.3 · CRITICAL
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N
EPSS
0.01927 · 79.8th percentile
Weaknesses
CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'); CWE-306 · Missing Authentication for Critical Function; CWE-552 · Files or Directories Accessible to External Parties
Published
2025-07-15T13:01Z
EPSS history
Timeline
  • 15 JUL 13:01Z
    ColoradoFTP Server <= 1.3 Build 8 Path Traversal Information Disclosure
    cvelistv5