Auth bypass in Coloradoftp Server
CVE-2025-34110
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.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
EPSS exploit prediction
EPSS: 0.019 (79.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 79th percentile — 79.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.013 · newest: 0.019 · change: +0.006
Affected products
- Coloradoftp Server — versions 0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/auxiliary/… (exploit)
- www.exploit-db.com/exploits/40231 (exploit)
- bitbucket.org/nolife/coloradoftp/commits/16a60c4a74ef477cd8c16ca82442eaab2fbe8c… (patch)
- www.vulncheck.com/advisories/colorado-ftp-server-path-traversal-information-dis… (third-party-advisory)
Frequently asked questions
- What is CVE-2025-34110?
- CVE-2025-34110 is a vulnerability in Coloradoftp Server, classified under Path Traversal. Published 2025-07-15.
- Is CVE-2025-34110 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.