# CVE-2011-10029

## Summary

- **CVE ID:** CVE-2011-10029
- **Severity:** HIGH
- **CVSS Score:** 8.7 (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N)
- **CWE:** CWE-134
- **Published:** Aug 20, 2025
- **Last Modified:** May 15, 2026

## Description

Solar FTP Server fails to properly handle format strings passed to the USER command. When a specially crafted string containing format specifiers is sent, the server crashes due to a read access violation in the __output_1() function of sfsservice.exe. This results in a denial of service (DoS) condition.

## Affected Products

- Flexbyte Software — Solar FTP Server (*)
- Flexbyte Software — Solar FTP Server (0)

## References

- [CNA](https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/auxiliary/dos/windows/ftp/solarftp_user.rb)
- [CNA](https://www.exploit-db.com/exploits/16204)
- [CNA](https://web.archive.org/web/20111102141514/https://solarftp.com/)
- [CNA](https://web.archive.org/web/20111009122553/http://solarftp.com/blog/news/solar-ftp-server-2-1-2.html)
- [CNA](https://www.vulncheck.com/advisories/solar-ftp-server-malformed-user-dos)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 48.84%
- **EPSS Percentile:** 97.7

---
_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-17._